/****************************************************************/
/*  original filename prototype.js                        */
/****************************************************************/


/*  Prototype JavaScript framework, version 1.6.1_rc3
 *  (c) 2005-2009 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.1_rc3',

  Browser: (function(){
    var ua = navigator.userAgent;
    var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]';
    return {
      IE:             !!window.attachEvent && !isOpera,
      Opera:          isOpera,
      WebKit:         ua.indexOf('AppleWebKit/') > -1,
      Gecko:          ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1,
      MobileSafari:   /Apple.*Mobile.*Safari/.test(ua)
    }
  })(),

  BrowserFeatures: {
    XPath: !!document.evaluate,
    SelectorsAPI: !!document.querySelector,
    ElementExtensions: (function() {
      var constructor = window.Element || window.HTMLElement;
      return !!(constructor && constructor.prototype);
    })(),
    SpecificElementExtensions: (function() {
      if (typeof window.HTMLDivElement !== 'undefined')
        return true;

      var div = document.createElement('div');
      var form = document.createElement('form');
      var isSupported = false;

      if (div['__proto__'] && (div['__proto__'] !== form['__proto__'])) {
        isSupported = true;
      }

      div = form = null;

      return isSupported;
    })()
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


var Abstract = { };


var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

/* Based on Alex Arnell's inheritance implementation. */

var Class = (function() {
  function subclass() {};
  function create() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;
    return klass;
  }

  function addMethods(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length) {
      if (source.toString != Object.prototype.toString)
        properties.push("toString");
      if (source.valueOf != Object.prototype.valueOf)
        properties.push("valueOf");
    }

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value;
        value = (function(m) {
          return function() { return ancestor[m].apply(this, arguments); };
        })(property).wrap(method);

        value.valueOf = method.valueOf.bind(method);
        value.toString = method.toString.bind(method);
      }
      this.prototype[property] = value;
    }

    return this;
  }

  return {
    create: create,
    Methods: {
      addMethods: addMethods
    }
  };
})();
(function() {

  function getClass(object) {
    return Object.prototype.toString.call(object)
     .match(/^\[object\s(.*)\]$/)[1];
  }

  function extend(destination, source) {
    for (var property in source)
      destination[property] = source[property];
    return destination;
  }

  function inspect(object) {
    try {
      if (isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  }

  function toJSON(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = toJSON(object[property]);
      if (!isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  }

  function toQueryString(object) {
    return $H(object).toQueryString();
  }

  function toHTML(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  }

  function keys(object) {
    var results = [];
    for (var property in object)
      results.push(property);
    return results;
  }

  function values(object) {
    var results = [];
    for (var property in object)
      results.push(object[property]);
    return results;
  }

  function clone(object) {
    return extend({ }, object);
  }

  function isElement(object) {
    return !!(object && object.nodeType == 1);
  }

  function isArray(object) {
    return getClass(object) === "Array";
  }


  function isHash(object) {
    return object instanceof Hash;
  }

  function isFunction(object) {
    return typeof object === "function";
  }

  function isString(object) {
    return getClass(object) === "String";
  }

  function isNumber(object) {
    return getClass(object) === "Number";
  }

  function isUndefined(object) {
    return typeof object === "undefined";
  }

  extend(Object, {
    extend:        extend,
    inspect:       inspect,
    toJSON:        toJSON,
    toQueryString: toQueryString,
    toHTML:        toHTML,
    keys:          keys,
    values:        values,
    clone:         clone,
    isElement:     isElement,
    isArray:       isArray,
    isHash:        isHash,
    isFunction:    isFunction,
    isString:      isString,
    isNumber:      isNumber,
    isUndefined:   isUndefined
  });
})();
Object.extend(Function.prototype, (function() {
  var slice = Array.prototype.slice;

  function update(array, args) {
    var arrayLength = array.length, length = args.length;
    while (length--) array[arrayLength + length] = args[length];
    return array;
  }

  function merge(array, args) {
    array = slice.call(array, 0);
    return update(array, args);
  }

  function argumentNames() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1]
      .replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '')
      .replace(/\s+/g, '').split(',');
    return names.length == 1 && !names[0] ? [] : names;
  }

  function bind(context) {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = slice.call(arguments, 1);
    return function() {
      var a = merge(args, arguments);
      return __method.apply(context, a);
    }
  }

  function bindAsEventListener(context) {
    var __method = this, args = slice.call(arguments, 1);
    return function(event) {
      var a = update([event || window.event], args);
      return __method.apply(context, a);
    }
  }

  function curry() {
    if (!arguments.length) return this;
    var __method = this, args = slice.call(arguments, 0);
    return function() {
      var a = merge(args, arguments);
      return __method.apply(this, a);
    }
  }

  function delay(timeout) {
    var __method = this, args = slice.call(arguments, 1);
    timeout = timeout * 1000
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  }

  function defer() {
    var args = update([0.01], arguments);
    return this.delay.apply(this, args);
  }

  function wrap(wrapper) {
    var __method = this;
    return function() {
      var a = update([__method.bind(this)], arguments);
      return wrapper.apply(this, a);
    }
  }

  function methodize() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      var a = update([this], arguments);
      return __method.apply(null, a);
    };
  }

  return {
    argumentNames:       argumentNames,
    bind:                bind,
    bindAsEventListener: bindAsEventListener,
    curry:               curry,
    delay:               delay,
    defer:               defer,
    wrap:                wrap,
    methodize:           methodize
  }
})());


Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};


RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};
var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } catch(e) {
        /* empty catch for clients that don't support try/finally */
      }
      finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, (function() {

  function prepareReplacement(replacement) {
    if (Object.isFunction(replacement)) return replacement;
    var template = new Template(replacement);
    return function(match) { return template.evaluate(match) };
  }

  function gsub(pattern, replacement) {
    var result = '', source = this, match;
    replacement = prepareReplacement(replacement);

    if (Object.isString(pattern))
      pattern = RegExp.escape(pattern);

    if (!(pattern.length || pattern.source)) {
      replacement = replacement('');
      return replacement + source.split('').join(replacement) + replacement;
    }

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  }

  function sub(pattern, replacement, count) {
    replacement = prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  }

  function scan(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  }

  function truncate(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  }

  function strip() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  }

  function stripTags() {
    return this.replace(/<\w+(\s+("[^"]*"|'[^']*'|[^>])+)?>|<\/\w+>/gi, '');
  }

  function stripScripts() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  }

  function extractScripts() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  }

  function evalScripts() {
    return this.extractScripts().map(function(script) { return eval(script) });
  }

  function escapeHTML() {
    escapeHTML.text.data = this;
    return escapeHTML.div.innerHTML;
  }

  function unescapeHTML() {
    var div = document.createElement('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  }


  function toQueryParams(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  }

  function toArray() {
    return this.split('');
  }

  function succ() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  }

  function times(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  }

  function camelize() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  }

  function capitalize() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  }

  function underscore() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  }

  function dasherize() {
    return this.gsub(/_/,'-');
  }

  function inspect(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  }

  function toJSON() {
    return this.inspect(true);
  }

  function unfilterJSON(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  }

  function isJSON() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  }

  function evalJSON(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  }

  function include(pattern) {
    return this.indexOf(pattern) > -1;
  }

  function startsWith(pattern) {
    return this.indexOf(pattern) === 0;
  }

  function endsWith(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  }

  function empty() {
    return this == '';
  }

  function blank() {
    return /^\s*$/.test(this);
  }

  function interpolate(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }

  return {
    gsub:           gsub,
    sub:            sub,
    scan:           scan,
    truncate:       truncate,
    strip:          String.prototype.trim ? String.prototype.trim : strip,
    stripTags:      stripTags,
    stripScripts:   stripScripts,
    extractScripts: extractScripts,
    evalScripts:    evalScripts,
    escapeHTML:     escapeHTML,
    unescapeHTML:   unescapeHTML,
    toQueryParams:  toQueryParams,
    parseQuery:     toQueryParams,
    toArray:        toArray,
    succ:           succ,
    times:          times,
    camelize:       camelize,
    capitalize:     capitalize,
    underscore:     underscore,
    dasherize:      dasherize,
    inspect:        inspect,
    toJSON:         toJSON,
    unfilterJSON:   unfilterJSON,
    isJSON:         isJSON,
    evalJSON:       evalJSON,
    include:        include,
    startsWith:     startsWith,
    endsWith:       endsWith,
    empty:          empty,
    blank:          blank,
    interpolate:    interpolate
  };
})());

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);

if ('<\n>'.escapeHTML() !== '&lt;\n&gt;') {
  String.prototype.escapeHTML = function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  };
}

if ('&lt;\n&gt;'.unescapeHTML() !== '<\n>') {
  String.prototype.unescapeHTML = function() {
    return this.stripTags().replace(/&lt;/g,'<').replace(/&gt;/g,'>').replace(/&amp;/g,'&');
  };
}
var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (object && Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return (match[1] + '');

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = (function() {
  function each(iterator, context) {
    var index = 0;
    try {
      this._each(function(value) {
        iterator.call(context, value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  }

  function eachSlice(number, iterator, context) {
    var index = -number, slices = [], array = this.toArray();
    if (number < 1) return array;
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  }

  function all(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator.call(context, value, index);
      if (!result) throw $break;
    });
    return result;
  }

  function any(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator.call(context, value, index))
        throw $break;
    });
    return result;
  }

  function collect(iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator.call(context, value, index));
    });
    return results;
  }

  function detect(iterator, context) {
    var result;
    this.each(function(value, index) {
      if (iterator.call(context, value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  }

  function findAll(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  }

  function grep(filter, iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(RegExp.escape(filter));

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator.call(context, value, index));
    });
    return results;
  }

  function include(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  }

  function inGroupsOf(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  }

  function inject(memo, iterator, context) {
    this.each(function(value, index) {
      memo = iterator.call(context, memo, value, index);
    });
    return memo;
  }

  function invoke(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  }

  function max(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  }

  function min(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  }

  function partition(iterator, context) {
    iterator = iterator || Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator.call(context, value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  }

  function pluck(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  }

  function reject(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  }

  function sortBy(iterator, context) {
    return this.map(function(value, index) {
      return {
        value: value,
        criteria: iterator.call(context, value, index)
      };
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  }

  function toArray() {
    return this.map();
  }

  function zip() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  }

  function size() {
    return this.toArray().length;
  }

  function inspect() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }









  return {
    each:       each,
    eachSlice:  eachSlice,
    all:        all,
    every:      all,
    any:        any,
    some:       any,
    collect:    collect,
    map:        collect,
    detect:     detect,
    findAll:    findAll,
    select:     findAll,
    filter:     findAll,
    grep:       grep,
    include:    include,
    member:     include,
    inGroupsOf: inGroupsOf,
    inject:     inject,
    invoke:     invoke,
    max:        max,
    min:        min,
    partition:  partition,
    pluck:      pluck,
    reject:     reject,
    sortBy:     sortBy,
    toArray:    toArray,
    entries:    toArray,
    zip:        zip,
    size:       size,
    inspect:    inspect,
    find:       detect
  };
})();
function $A(iterable) {
  if (!iterable) return [];
  if ('toArray' in Object(iterable)) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

Array.from = $A;


(function() {
  var arrayProto = Array.prototype,
      slice = arrayProto.slice,
      _each = arrayProto.forEach; // use native browser JS 1.6 implementation if available

  function each(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  }
  if (!_each) _each = each;

  function clear() {
    this.length = 0;
    return this;
  }

  function first() {
    return this[0];
  }

  function last() {
    return this[this.length - 1];
  }

  function compact() {
    return this.select(function(value) {
      return value != null;
    });
  }

  function flatten() {
    return this.inject([], function(array, value) {
      if (Object.isArray(value))
        return array.concat(value.flatten());
      array.push(value);
      return array;
    });
  }

  function without() {
    var values = slice.call(arguments, 0);
    return this.select(function(value) {
      return !values.include(value);
    });
  }

  function reverse(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  }

  function uniq(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  }

  function intersect(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  }


  function clone() {
    return slice.call(this, 0);
  }

  function size() {
    return this.length;
  }

  function inspect() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  }

  function toJSON() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }

  function indexOf(item, i) {
    i || (i = 0);
    var length = this.length;
    if (i < 0) i = length + i;
    for (; i < length; i++)
      if (this[i] === item) return i;
    return -1;
  }

  function lastIndexOf(item, i) {
    i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
    var n = this.slice(0, i).reverse().indexOf(item);
    return (n < 0) ? n : i - n - 1;
  }

  function concat() {
    var array = slice.call(this, 0), item;
    for (var i = 0, length = arguments.length; i < length; i++) {
      item = arguments[i];
      if (Object.isArray(item) && !('callee' in item)) {
        for (var j = 0, arrayLength = item.length; j < arrayLength; j++)
          array.push(item[j]);
      } else {
        array.push(item);
      }
    }
    return array;
  }

  Object.extend(arrayProto, Enumerable);

  if (!arrayProto._reverse)
    arrayProto._reverse = arrayProto.reverse;

  Object.extend(arrayProto, {
    _each:     _each,
    clear:     clear,
    first:     first,
    last:      last,
    compact:   compact,
    flatten:   flatten,
    without:   without,
    reverse:   reverse,
    uniq:      uniq,
    intersect: intersect,
    clone:     clone,
    toArray:   clone,
    size:      size,
    inspect:   inspect,
    toJSON:    toJSON
  });

  var CONCAT_ARGUMENTS_BUGGY = (function() {
    return [].concat(arguments)[0][0] !== 1;
  })(1,2)

  if (CONCAT_ARGUMENTS_BUGGY) arrayProto.concat = concat;

  if (!arrayProto.indexOf) arrayProto.indexOf = indexOf;
  if (!arrayProto.lastIndexOf) arrayProto.lastIndexOf = lastIndexOf;
})();
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {
  function initialize(object) {
    this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
  }

  function _each(iterator) {
    for (var key in this._object) {
      var value = this._object[key], pair = [key, value];
      pair.key = key;
      pair.value = value;
      iterator(pair);
    }
  }

  function set(key, value) {
    return this._object[key] = value;
  }

  function get(key) {
    if (this._object[key] !== Object.prototype[key])
      return this._object[key];
  }

  function unset(key) {
    var value = this._object[key];
    delete this._object[key];
    return value;
  }

  function toObject() {
    return Object.clone(this._object);
  }

  function keys() {
    return this.pluck('key');
  }

  function values() {
    return this.pluck('value');
  }

  function index(value) {
    var match = this.detect(function(pair) {
      return pair.value === value;
    });
    return match && match.key;
  }

  function merge(object) {
    return this.clone().update(object);
  }

  function update(object) {
    return new Hash(object).inject(this, function(result, pair) {
      result.set(pair.key, pair.value);
      return result;
    });
  }

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  function toQueryString() {
    return this.inject([], function(results, pair) {
      var key = encodeURIComponent(pair.key), values = pair.value;

      if (values && typeof values == 'object') {
        if (Object.isArray(values))
          return results.concat(values.map(toQueryPair.curry(key)));
      } else results.push(toQueryPair(key, values));
      return results;
    }).join('&');
  }

  function inspect() {
    return '#<Hash:{' + this.map(function(pair) {
      return pair.map(Object.inspect).join(': ');
    }).join(', ') + '}>';
  }

  function toJSON() {
    return Object.toJSON(this.toObject());
  }

  function clone() {
    return new Hash(this);
  }

  return {
    initialize:             initialize,
    _each:                  _each,
    set:                    set,
    get:                    get,
    unset:                  unset,
    toObject:               toObject,
    toTemplateReplacements: toObject,
    keys:                   keys,
    values:                 values,
    index:                  index,
    merge:                  merge,
    update:                 update,
    toQueryString:          toQueryString,
    inspect:                inspect,
    toJSON:                 toJSON,
    clone:                  clone
  };
})());

Hash.from = $H;
Object.extend(Number.prototype, (function() {
  function toColorPart() {
    return this.toPaddedString(2, 16);
  }

  function succ() {
    return this + 1;
  }

  function times(iterator, context) {
    $R(0, this, true).each(iterator, context);
    return this;
  }

  function toPaddedString(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  }

  function toJSON() {
    return isFinite(this) ? this.toString() : 'null';
  }

  function abs() {
    return Math.abs(this);
  }

  function round() {
    return Math.round(this);
  }

  function ceil() {
    return Math.ceil(this);
  }

  function floor() {
    return Math.floor(this);
  }

  return {
    toColorPart:    toColorPart,
    succ:           succ,
    times:          times,
    toPaddedString: toPaddedString,
    toJSON:         toJSON,
    abs:            abs,
    round:          round,
    ceil:           ceil,
    floor:          floor
  };
})());

function $R(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
}

var ObjectRange = Class.create(Enumerable, (function() {
  function initialize(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  }

  function _each(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  }

  function include(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }

  return {
    initialize: initialize,
    _each:      _each,
    include:    include
  };
})());



var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});
Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});
Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null; }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];








Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,

  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});



function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}


(function(global) {

  var SETATTRIBUTE_IGNORES_NAME = (function(){
    var elForm = document.createElement("form");
    var elInput = document.createElement("input");
    var root = document.documentElement;
    elInput.setAttribute("name", "test");
    elForm.appendChild(elInput);
    root.appendChild(elForm);
    var isBuggy = elForm.elements
      ? (typeof elForm.elements.test == "undefined")
      : null;
    root.removeChild(elForm);
    elForm = elInput = null;
    return isBuggy;
  })();

  var element = global.Element;
  global.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (SETATTRIBUTE_IGNORES_NAME && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(global.Element, element || { });
  if (element) global.Element.prototype = element.prototype;
})(this);

Element.cache = { };
Element.idCounter = 1;

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },


  hide: function(element) {
    element = $(element);
    element.style.display = 'none';
    return element;
  },

  show: function(element) {
    element = $(element);
    element.style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: (function(){

    var SELECT_ELEMENT_INNERHTML_BUGGY = (function(){
      var el = document.createElement("select"),
          isBuggy = true;
      el.innerHTML = "<option value=\"test\">test</option>";
      if (el.options && el.options[0]) {
        isBuggy = el.options[0].nodeName.toUpperCase() !== "OPTION";
      }
      el = null;
      return isBuggy;
    })();

    var TABLE_ELEMENT_INNERHTML_BUGGY = (function(){
      try {
        var el = document.createElement("table");
        if (el && el.tBodies) {
          el.innerHTML = "<tbody><tr><td>test</td></tr></tbody>";
          var isBuggy = typeof el.tBodies[0] == "undefined";
          el = null;
          return isBuggy;
        }
      } catch (e) {
        return true;
      }
    })();

    var SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING = (function () {
      var s = document.createElement("script"),
          isBuggy = false;
      try {
        s.appendChild(document.createTextNode(""));
        isBuggy = !s.firstChild ||
          s.firstChild && s.firstChild.nodeType !== 3;
      } catch (e) {
        isBuggy = true;
      }
      s = null;
      return isBuggy;
    })();

    function update(element, content) {
      element = $(element);

      if (content && content.toElement)
        content = content.toElement();

      if (Object.isElement(content))
        return element.update().insert(content);

      content = Object.toHTML(content);

      var tagName = element.tagName.toUpperCase();

      if (tagName === 'SCRIPT' && SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING) {
        element.text = content;
        return element;
      }

      if (SELECT_ELEMENT_INNERHTML_BUGGY || TABLE_ELEMENT_INNERHTML_BUGGY) {
        if (tagName in Element._insertionTranslations.tags) {
          while (element.firstChild) {
            element.removeChild(element.firstChild);
          }
          Element._getContentFromAnonymousElement(tagName, content.stripScripts())
            .each(function(node) {
              element.appendChild(node)
            });
        }
        else {
          element.innerHTML = content.stripScripts();
        }
      }
      else {
        element.innerHTML = content.stripScripts();
      }

      content.evalScripts.bind(content).defer();
      return element;
    }

    return update;
  })(),

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return Element.recursivelyCollect(element, 'parentNode');
  },

  descendants: function(element) {
    return Element.select(element, "*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return Element.recursivelyCollect(element, 'previousSibling');
  },

  nextSiblings: function(element) {
    return Element.recursivelyCollect(element, 'nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return Element.previousSiblings(element).reverse()
      .concat(Element.nextSiblings(element));
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = Element.ancestors(element);
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return Element.firstDescendant(element);
    return Object.isNumber(expression) ? Element.descendants(element)[expression] :
      Element.select(element, expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = Element.previousSiblings(element);
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = Element.nextSiblings(element);
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },


  select: function(element) {
    var args = Array.prototype.slice.call(arguments, 1);
    return Selector.findChildElements(element, args);
  },

  adjacent: function(element) {
    var args = Array.prototype.slice.call(arguments, 1);
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = Element.readAttribute(element, 'id');
    if (id) return id;
    do { id = 'anonymous_element_' + Element.idCounter++ } while ($(id));
    Element.writeAttribute(element, 'id', id);
    return id;
  },

  readAttribute: (function(){

    var iframeGetAttributeThrowsError = (function(){
      var el = document.createElement('iframe'),
          isBuggy = false;

      document.documentElement.appendChild(el);
      try {
        el.getAttribute('type', 2);
      } catch(e) {
        isBuggy = true;
      }
      document.documentElement.removeChild(el);
      el = null;
      return isBuggy;
    })();

    return function(element, name) {
      element = $(element);
      if (iframeGetAttributeThrowsError &&
          name === 'type' &&
          element.tagName.toUpperCase() == 'IFRAME') {
        return element.getAttribute('type');
      }
      if (Prototype.Browser.IE) {
        var t = Element._attributeTranslations.read;
        if (t.values[name]) return t.values[name](element, name);
        if (t.names[name]) name = t.names[name];
        if (name.include(':')) {
          return (!element.attributes || !element.attributes[name]) ? null :
           element.attributes[name].value;
        }
      }
      return element.getAttribute(name);
    }
  })(),

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return Element.getDimensions(element).height;
  },

  getWidth: function(element) {
    return Element.getDimensions(element).width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!Element.hasClassName(element, className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return Element[Element.hasClassName(element, className) ?
      'removeClassName' : 'addClassName'](element, className);
  },

  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (ancestor.contains)
      return ancestor.contains(element) && ancestor !== element;

    while (element = element.parentNode)
      if (element == ancestor) return true;

    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = Element.cumulativeOffset(element);
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value || value == 'auto') {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = Element.getStyle(element, 'display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    if (originalPosition != 'fixed') // Switching fixed to absolute causes issues in Safari
      els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      if (Prototype.Browser.Opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName.toUpperCase() == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (Element.getStyle(element, 'position') == 'absolute') return element;

    var offsets = Element.positionedOffset(element);
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (Element.getStyle(element, 'position') == 'relative') return element;

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    source = $(source);
    var p = Element.viewportOffset(source);

    element = $(element);
    var delta = [0, 0];
    var parent = null;
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = Element.getOffsetParent(element);
      delta = Element.viewportOffset(parent);
    }

    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,

  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          if (!Element.visible(element)) return null;

          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      try { element.offsetParent }
      catch(e) { return $(document.body) }
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        try { element.offsetParent }
        catch(e) { return Element._returnOffset(0,0) }
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
    function(proceed, element) {
      try { element.offsetParent }
      catch(e) { return Element._returnOffset(0,0) }
      return proceed(element);
    }
  );

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = (function(){

    var classProp = 'className';
    var forProp = 'for';

    var el = document.createElement('div');

    el.setAttribute(classProp, 'x');

    if (el.className !== 'x') {
      el.setAttribute('class', 'x');
      if (el.className === 'x') {
        classProp = 'class';
      }
    }
    el = null;

    el = document.createElement('label');
    el.setAttribute(forProp, 'x');
    if (el.htmlFor !== 'x') {
      el.setAttribute('htmlFor', 'x');
      if (el.htmlFor === 'x') {
        forProp = 'htmlFor';
      }
    }
    el = null;

    return {
      read: {
        names: {
          'class':      classProp,
          'className':  classProp,
          'for':        forProp,
          'htmlFor':    forProp
        },
        values: {
          _getAttr: function(element, attribute) {
            return element.getAttribute(attribute, 2);
          },
          _getAttrNode: function(element, attribute) {
            var node = element.getAttributeNode(attribute);
            return node ? node.value : "";
          },
          _getEv: (function(){

            var el = document.createElement('div');
            el.onclick = Prototype.emptyFunction;
            var value = el.getAttribute('onclick');
            var f;

            if (String(value).indexOf('{') > -1) {
              f = function(element, attribute) {
                attribute = element.getAttribute(attribute);
                if (!attribute) return null;
                attribute = attribute.toString();
                attribute = attribute.split('{')[1];
                attribute = attribute.split('}')[0];
                return attribute.strip();
              }
            }
            else if (value === '') {
              f = function(element, attribute) {
                attribute = element.getAttribute(attribute);
                if (!attribute) return null;
                return attribute.strip();
              }
            }
            el = null;
            return f;
          })(),
          _flag: function(element, attribute) {
            return $(element).hasAttribute(attribute) ? attribute : null;
          },
          style: function(element) {
            return element.style.cssText.toLowerCase();
          },
          title: function(element) {
            return element.title;
          }
        }
      }
    }
  })();

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);

  if (Prototype.BrowserFeatures.ElementExtensions) {
    (function() {
      function _descendants(element) {
        var nodes = element.getElementsByTagName('*'), results = [];
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName !== "!") // Filter out comment nodes.
            results.push(node);
        return results;
      }

      Element.Methods.down = function(element, expression, index) {
        element = $(element);
        if (arguments.length == 1) return element.firstDescendant();
        return Object.isNumber(expression) ? _descendants(element)[expression] :
          Element.select(element, expression)[index || 0];
      }
    })();
  }

}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName.toUpperCase() == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if ('outerHTML' in document.documentElement) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  var tags = Element._insertionTranslations.tags;
  Object.extend(tags, {
    THEAD: tags.TBODY,
    TFOOT: tags.TBODY,
    TH:    tags.TD
  });
})();

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return !!(node && node.specified);
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

(function(div) {

  if (!Prototype.BrowserFeatures.ElementExtensions && div['__proto__']) {
    window.HTMLElement = { };
    window.HTMLElement.prototype = div['__proto__'];
    Prototype.BrowserFeatures.ElementExtensions = true;
  }

  div = null;

})(document.createElement('div'))

Element.extend = (function() {

  function checkDeficiency(tagName) {
    if (typeof window.Element != 'undefined') {
      var proto = window.Element.prototype;
      if (proto) {
        var id = '_' + (Math.random()+'').slice(2);
        var el = document.createElement(tagName);
        proto[id] = 'x';
        var isBuggy = (el[id] !== 'x');
        delete proto[id];
        el = null;
        return isBuggy;
      }
    }
    return false;
  }

  function extendElementWith(element, methods) {
    for (var property in methods) {
      var value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }
  }

  var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY = checkDeficiency('object');
  var HTMLAPPLETELEMENT_PROTOTYPE_BUGGY = checkDeficiency('applet');

  if (Prototype.BrowserFeatures.SpecificElementExtensions) {
    if (HTMLOBJECTELEMENT_PROTOTYPE_BUGGY &&
        HTMLAPPLETELEMENT_PROTOTYPE_BUGGY) {
      return function(element) {
        if (element && typeof element._extendedByPrototype == 'undefined') {
          var t = element.tagName;
          if (t && (/^(?:object|applet|embed)$/i.test(t))) {
            extendElementWith(element, Element.Methods);
            extendElementWith(element, Element.Methods.Simulated);
            extendElementWith(element, Element.Methods.ByTag[t.toUpperCase()]);
          }
        }
        return element;
      }
    }
    return Prototype.K;
  }

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || typeof element._extendedByPrototype != 'undefined' ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
        tagName = element.tagName.toUpperCase();

    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    extendElementWith(element, methods);

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    var element = document.createElement(tagName);
    var proto = element['__proto__'] || element.constructor.prototype;
    element = null;
    return proto;
  }

  var elementPrototype = window.HTMLElement ? HTMLElement.prototype :
   Element.prototype;

  if (F.ElementExtensions) {
    copy(Element.Methods, elementPrototype);
    copy(Element.Methods.Simulated, elementPrototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};


document.viewport = {

  getDimensions: function() {
    return { width: this.getWidth(), height: this.getHeight() };
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop  || document.body.scrollTop);
  }
};

(function(viewport) {
  var B = Prototype.Browser, doc = document, element, property = {};

  function getRootElement() {
    if (B.WebKit && !doc.evaluate)
      return document;

    if (B.Opera && window.parseFloat(window.opera.version()) < 9.5)
      return document.body;

    return document.documentElement;
  }

  function define(D) {
    if (!element) element = getRootElement();

    property[D] = 'client' + D;

    viewport['get' + D] = function() { return element[property[D]] };
    return viewport['get' + D]();
  }

  viewport.getWidth  = define.curry('Width');

  viewport.getHeight = define.curry('Height');
})(document.viewport);


Element.Storage = {
  UID: 1
};

Element.addMethods({
  getStorage: function(element) {
    if (!(element = $(element))) return;

    var uid;
    if (element === window) {
      uid = 0;
    } else {
      if (typeof element._prototypeUID === "undefined")
        element._prototypeUID = [Element.Storage.UID++];
      uid = element._prototypeUID[0];
    }

    if (!Element.Storage[uid])
      Element.Storage[uid] = $H();

    return Element.Storage[uid];
  },

  store: function(element, key, value) {
    if (!(element = $(element))) return;

    if (arguments.length === 2) {
      Element.getStorage(element).update(key);
    } else {
      Element.getStorage(element).set(key, value);
    }

    return element;
  },

  retrieve: function(element, key, defaultValue) {
    if (!(element = $(element))) return;
    var hash = Element.getStorage(element), value = hash.get(key);

    if (Object.isUndefined(value)) {
      hash.set(key, defaultValue);
      value = defaultValue;
    }

    return value;
  },

  clone: function(element, deep) {
    if (!(element = $(element))) return;
    var clone = element.cloneNode(deep);
    clone._prototypeUID = void 0;
    if (deep) {
      var descendants = Element.select(clone, '*'),
          i = descendants.length;
      while (i--) {
        descendants[i]._prototypeUID = void 0;
      }
    }
    return Element.extend(clone);
  }
});
/* Portions of the Selector class are derived from Jack Slocum's DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();

    if (this.shouldUseSelectorsAPI()) {
      this.mode = 'selectorsAPI';
    } else if (this.shouldUseXPath()) {
      this.mode = 'xpath';
      this.compileXPathMatcher();
    } else {
      this.mode = "normal";
      this.compileMatcher();
    }

  },

  shouldUseXPath: (function() {

    var IS_DESCENDANT_SELECTOR_BUGGY = (function(){
      var isBuggy = false;
      if (document.evaluate && window.XPathResult) {
        var el = document.createElement('div');
        el.innerHTML = '<ul><li></li></ul><div><ul><li></li></ul></div>';

        var xpath = ".//*[local-name()='ul' or local-name()='UL']" +
          "//*[local-name()='li' or local-name()='LI']";

        var result = document.evaluate(xpath, el, null,
          XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);

        isBuggy = (result.snapshotLength !== 2);
        el = null;
      }
      return isBuggy;
    })();

    return function() {
      if (!Prototype.BrowserFeatures.XPath) return false;

      var e = this.expression;

      if (Prototype.Browser.WebKit &&
       (e.include("-of-type") || e.include(":empty")))
        return false;

      if ((/(\[[\w-]*?:|:checked)/).test(e))
        return false;

      if (IS_DESCENDANT_SELECTOR_BUGGY) return false;

      return true;
    }

  })(),

  shouldUseSelectorsAPI: function() {
    if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

    if (Selector.CASE_INSENSITIVE_CLASS_NAMES) return false;

    if (!Selector._div) Selector._div = new Element('div');

    try {
      Selector._div.querySelector(this.expression);
    } catch(e) {
      return false;
    }

    return true;
  },

  compileMatcher: function() {
    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m, len = ps.length, name;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i = 0; i<len; i++) {
        p = ps[i].re;
        name = ps[i].name;
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[name]) ? c[name](m) :
            new Template(c[name]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m, len = ps.length, name;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i = 0; i<len; i++) {
        name = ps[i].name;
        if (m = e.match(ps[i].re)) {
          this.matcher.push(Object.isFunction(x[name]) ? x[name](m) :
            new Template(x[name]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    var e = this.expression, results;

    switch (this.mode) {
      case 'selectorsAPI':
        if (root !== document) {
          var oldId = root.id, id = $(root).identify();
          id = id.replace(/[\.:]/g, "\\$0");
          e = "#" + id + " " + e;
        }

        results = $A(root.querySelectorAll(e)).map(Element.extend);
        root.id = oldId;

        return results;
      case 'xpath':
        return document._getElementsByXPath(this.xpath, root);
      default:
       return this.matcher(root);
    }
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m, len = ps.length, name;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i = 0; i<len; i++) {
        p = ps[i].re;
        name = ps[i].name;
        if (m = e.match(p)) {
          if (as[name]) {
            this.tokens.push([name, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

if (Prototype.BrowserFeatures.SelectorsAPI &&
 document.compatMode === 'BackCompat') {
  Selector.CASE_INSENSITIVE_CLASS_NAMES = (function(){
    var div = document.createElement('div'),
     span = document.createElement('span');

    div.id = "prototype_test_id";
    span.className = 'Test';
    div.appendChild(span);
    var isIgnored = (div.querySelector('#prototype_test_id .test') !== null);
    div = span = null;
    return isIgnored;
  })();
}

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0)]",
      'checked':     "[@checked]",
      'disabled':    "[(@disabled) and (@type!='hidden')]",
      'enabled':     "[not(@disabled) and (@type!='hidden')]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v, len = p.length, name;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i = 0; i<len; i++) {
            name = p[i].name
            if (m = e.match(p[i].re)) {
              v = Object.isFunction(x[name]) ? x[name](m) : new Template(x[name]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: [
    { name: 'laterSibling', re: /^\s*~\s*/ },
    { name: 'child',        re: /^\s*>\s*/ },
    { name: 'adjacent',     re: /^\s*\+\s*/ },
    { name: 'descendant',   re: /^\s/ },

    { name: 'tagName',      re: /^\s*(\*|[\w\-]+)(\b|$)?/ },
    { name: 'id',           re: /^#([\w\-\*]+)(\b|$)/ },
    { name: 'className',    re: /^\.([\w\-\*]+)(\b|$)/ },
    { name: 'pseudo',       re: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/ },
    { name: 'attrPresence', re: /^\[((?:[\w-]+:)?[\w-]+)\]/ },
    { name: 'attr',         re: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/ }
  ],

  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: (function(){

      var PROPERTIES_ATTRIBUTES_MAP = (function(){
        var el = document.createElement('div'),
            isBuggy = false,
            propName = '_countedByPrototype',
            value = 'x'
        el[propName] = value;
        isBuggy = (el.getAttribute(propName) === value);
        el = null;
        return isBuggy;
      })();

      return PROPERTIES_ATTRIBUTES_MAP ?
        function(nodes) {
          for (var i = 0, node; node = nodes[i]; i++)
            node.removeAttribute('_countedByPrototype');
          return nodes;
        } :
        function(nodes) {
          for (var i = 0, node; node = nodes[i]; i++)
            node._countedByPrototype = void 0;
          return nodes;
        }
    })(),

    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (typeof (n = nodes[i])._countedByPrototype == 'undefined') {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;

      if (root == document) {
        if (!targetNode) return [];
        if (!nodes) return [targetNode];
      } else {
        if (!root.sourceIndex || root.sourceIndex < 1) {
          var nodes = root.getElementsByTagName('*');
          for (var j = 0, node; node = nodes[j]; j++) {
            if (node.id === id) return [node];
          }
        }
      }

      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (node.tagName == '!' || node.firstChild) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled && (!node.type || node.type !== 'hidden'))
          results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
    '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
    '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase() +
     '-').include('-' + (v || "").toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}

var Form = {
  reset: function(form) {
    form = $(form);
    form.reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    var elements = $(form).getElementsByTagName('*'),
        element,
        arr = [ ],
        serializers = Form.Element.Serializers;
    for (var i = 0; element = elements[i]; i++) {
      arr.push(element);
    }
    return arr.inject([], function(elements, child) {
      if (serializers[child.tagName.toLowerCase()])
        elements.push(Element.extend(child));
      return elements;
    })
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return /^(?:input|select|textarea)$/i.test(element.tagName);
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/


Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {

  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !(/^(?:button|reset|submit)$/i.test(element.type))))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;

var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, value) {
    if (Object.isUndefined(value))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, currentValue, single = !Object.isArray(value);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        currentValue = this.optionValue(opt);
        if (single) {
          if (currentValue == value) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = value.include(currentValue);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/


Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
(function() {

  var Event = {
    KEY_BACKSPACE: 8,
    KEY_TAB:       9,
    KEY_RETURN:   13,
    KEY_ESC:      27,
    KEY_LEFT:     37,
    KEY_UP:       38,
    KEY_RIGHT:    39,
    KEY_DOWN:     40,
    KEY_DELETE:   46,
    KEY_HOME:     36,
    KEY_END:      35,
    KEY_PAGEUP:   33,
    KEY_PAGEDOWN: 34,
    KEY_INSERT:   45,

    cache: {}
  };

  var docEl = document.documentElement;
  var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl
    && 'onmouseleave' in docEl;

  var _isButton;
  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    _isButton = function(event, code) {
      return event.button === buttonMap[code];
    };
  } else if (Prototype.Browser.WebKit) {
    _isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };
  } else {
    _isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  function isLeftClick(event)   { return _isButton(event, 0) }

  function isMiddleClick(event) { return _isButton(event, 1) }

  function isRightClick(event)  { return _isButton(event, 2) }

  function element(event) {
    event = Event.extend(event);

    var node = event.target, type = event.type,
     currentTarget = event.currentTarget;

    if (currentTarget && currentTarget.tagName) {
      if (type === 'load' || type === 'error' ||
        (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
          && currentTarget.type === 'radio'))
            node = currentTarget;
    }

    if (node.nodeType == Node.TEXT_NODE)
      node = node.parentNode;

    return Element.extend(node);
  }

  function findElement(event, expression) {
    var element = Event.element(event);
    if (!expression) return element;
    var elements = [element].concat(element.ancestors());
    return Selector.findElement(elements, expression, 0);
  }

  function pointer(event) {
    return { x: pointerX(event), y: pointerY(event) };
  }

  function pointerX(event) {
    var docElement = document.documentElement,
     body = document.body || { scrollLeft: 0 };

    return event.pageX || (event.clientX +
      (docElement.scrollLeft || body.scrollLeft) -
      (docElement.clientLeft || 0));
  }

  function pointerY(event) {
    var docElement = document.documentElement,
     body = document.body || { scrollTop: 0 };

    return  event.pageY || (event.clientY +
       (docElement.scrollTop || body.scrollTop) -
       (docElement.clientTop || 0));
  }


  function stop(event) {
    Event.extend(event);
    event.preventDefault();
    event.stopPropagation();

    event.stopped = true;
  }

  Event.Methods = {
    isLeftClick: isLeftClick,
    isMiddleClick: isMiddleClick,
    isRightClick: isRightClick,

    element: element,
    findElement: findElement,

    pointer: pointer,
    pointerX: pointerX,
    pointerY: pointerY,

    stop: stop
  };


  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    function _relatedTarget(event) {
      var element;
      switch (event.type) {
        case 'mouseover': element = event.fromElement; break;
        case 'mouseout':  element = event.toElement;   break;
        default: return null;
      }
      return Element.extend(element);
    }

    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return '[object Event]' }
    });

    Event.extend = function(event, element) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);

      Object.extend(event, {
        target: event.srcElement || element,
        relatedTarget: _relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });

      return Object.extend(event, methods);
    };
  } else {
    Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
    Object.extend(Event.prototype, methods);
    Event.extend = Prototype.K;
  }

  function _createResponder(element, eventName, handler) {
    var registry = Element.retrieve(element, 'prototype_event_registry');

    if (Object.isUndefined(registry)) {
      CACHE.push(element);
      registry = Element.retrieve(element, 'prototype_event_registry', $H());
    }

    var respondersForEvent = registry.get(eventName);
    if (Object.isUndefined(respondersForEvent)) {
      respondersForEvent = [];
      registry.set(eventName, respondersForEvent);
    }

    if (respondersForEvent.pluck('handler').include(handler)) return false;

    var responder;
    if (eventName.include(":")) {
      responder = function(event) {
        if (Object.isUndefined(event.eventName))
          return false;

        if (event.eventName !== eventName)
          return false;

        Event.extend(event, element);
        handler.call(element, event);
      };
    } else {
      if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED &&
       (eventName === "mouseenter" || eventName === "mouseleave")) {
        if (eventName === "mouseenter" || eventName === "mouseleave") {
          responder = function(event) {
            Event.extend(event, element);

            var parent = event.relatedTarget;
            while (parent && parent !== element) {
              try { parent = parent.parentNode; }
              catch(e) { parent = element; }
            }

            if (parent === element) return;

            handler.call(element, event);
          };
        }
      } else {
        responder = function(event) {
          Event.extend(event, element);
          handler.call(element, event);
        };
      }
    }

    responder.handler = handler;
    respondersForEvent.push(responder);
    return responder;
  }

  function _destroyCache() {
    for (var i = 0, length = CACHE.length; i < length; i++) {
      Event.stopObserving(CACHE[i]);
      CACHE[i] = null;
    }
  }

  var CACHE = [];

  if (Prototype.Browser.IE)
    window.attachEvent('onunload', _destroyCache);

  if (Prototype.Browser.WebKit)
    window.addEventListener('unload', Prototype.emptyFunction, false);


  var _getDOMEventName = Prototype.K;

  if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
    _getDOMEventName = function(eventName) {
      var translations = { mouseenter: "mouseover", mouseleave: "mouseout" };
      return eventName in translations ? translations[eventName] : eventName;
    };
  }

  function observe(element, eventName, handler) {
    element = $(element);

    var responder = _createResponder(element, eventName, handler);

    if (!responder) return element;

    if (eventName.include(':')) {
      if (element.addEventListener)
        element.addEventListener("dataavailable", responder, false);
      else {
        element.attachEvent("ondataavailable", responder);
        element.attachEvent("onfilterchange", responder);
      }
    } else {
      var actualEventName = _getDOMEventName(eventName);

      if (element.addEventListener)
        element.addEventListener(actualEventName, responder, false);
      else
        element.attachEvent("on" + actualEventName, responder);
    }

    return element;
  }

  function stopObserving(element, eventName, handler) {
    element = $(element);

    var registry = Element.retrieve(element, 'prototype_event_registry');

    if (Object.isUndefined(registry)) return element;

    if (eventName && !handler) {
      var responders = registry.get(eventName);

      if (Object.isUndefined(responders)) return element;

      responders.each( function(r) {
        Element.stopObserving(element, eventName, r.handler);
      });
      return element;
    } else if (!eventName) {
      registry.each( function(pair) {
        var eventName = pair.key, responders = pair.value;

        responders.each( function(r) {
          Element.stopObserving(element, eventName, r.handler);
        });
      });
      return element;
    }

    var responders = registry.get(eventName);

    if (!responders) return;

    var responder = responders.find( function(r) { return r.handler === handler; });
    if (!responder) return element;

    var actualEventName = _getDOMEventName(eventName);

    if (eventName.include(':')) {
      if (element.removeEventListener)
        element.removeEventListener("dataavailable", responder, false);
      else {
        element.detachEvent("ondataavailable", responder);
        element.detachEvent("onfilterchange",  responder);
      }
    } else {
      if (element.removeEventListener)
        element.removeEventListener(actualEventName, responder, false);
      else
        element.detachEvent('on' + actualEventName, responder);
    }

    registry.set(eventName, responders.without(responder));

    return element;
  }

  function fire(element, eventName, memo, bubble) {
    element = $(element);

    if (Object.isUndefined(bubble))
      bubble = true;

    if (element == document && document.createEvent && !element.dispatchEvent)
      element = document.documentElement;

    var event;
    if (document.createEvent) {
      event = document.createEvent('HTMLEvents');
      event.initEvent('dataavailable', true, true);
    } else {
      event = document.createEventObject();
      event.eventType = bubble ? 'ondataavailable' : 'onfilterchange';
    }

    event.eventName = eventName;
    event.memo = memo || { };

    if (document.createEvent)
      element.dispatchEvent(event);
    else
      element.fireEvent(event.eventType, event);

    return Event.extend(event);
  }


  Object.extend(Event, Event.Methods);

  Object.extend(Event, {
    fire:          fire,
    observe:       observe,
    stopObserving: stopObserving
  });

  Element.addMethods({
    fire:          fire,

    observe:       observe,

    stopObserving: stopObserving
  });

  Object.extend(document, {
    fire:          fire.methodize(),

    observe:       observe.methodize(),

    stopObserving: stopObserving.methodize(),

    loaded:        false
  });

  if (window.Event) Object.extend(window.Event, Event);
  else window.Event = Event;
})();

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards, John Resig, and Diego Perini. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearTimeout(timer);
    document.loaded = true;
    document.fire('dom:loaded');
  }

  function checkReadyState() {
    if (document.readyState === 'complete') {
      document.stopObserving('readystatechange', checkReadyState);
      fireContentLoadedEvent();
    }
  }

  function pollDoScroll() {
    try { document.documentElement.doScroll('left'); }
    catch(e) {
      timer = pollDoScroll.defer();
      return;
    }
    fireContentLoadedEvent();
  }

  if (document.addEventListener) {
    document.addEventListener('DOMContentLoaded', fireContentLoadedEvent, false);
  } else {
    document.observe('readystatechange', checkReadyState);
    if (window == top)
      timer = pollDoScroll.defer();
  }

  Event.observe(window, 'load', fireContentLoadedEvent);
})();

Element.addMethods();

/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

var Position = {
  includeScrollOffsets: false,

  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },


  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

/****************************************************************/
/*  original filename scriptaculous.js                        */
/****************************************************************/


// script.aculo.us scriptaculous.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// 
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// For details, see the script.aculo.us web site: http://script.aculo.us/

var Scriptaculous = {
  Version: '1.8.1',
  require: function(libraryName) {
    // inserting via DOM fails in Safari 2.0, so brute force approach
    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
  },
  REQUIRED_PROTOTYPE: '1.6.0',
  load: function() {
    function convertVersionString(versionString){
      var r = versionString.split('.');
      return parseInt(r[0])*100000 + parseInt(r[1])*1000 + parseInt(r[2]);
    }
 
    if((typeof Prototype=='undefined') || 
       (typeof Element == 'undefined') || 
       (typeof Element.Methods=='undefined') ||
       (convertVersionString(Prototype.Version) < 
        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
       throw("script.aculo.us requires the Prototype JavaScript framework >= " +
        Scriptaculous.REQUIRED_PROTOTYPE);
    
    $A(document.getElementsByTagName("script")).findAll( function(s) {
      return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))
    }).each( function(s) {
      var path = s.src.replace(/scriptaculous\.js(\?.*)?$/,'');
      var includes = s.src.match(/\?.*load=([a-z,]*)/);
      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(
       function(include) { Scriptaculous.require(path+include+'.js') });
    });
  }
}

Scriptaculous.load();
/****************************************************************/
/*  original filename effects.js                        */
/****************************************************************/


// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/ 

// converts rgb() and #xxx to #xxxxxx format,  
// returns self (or first argument) if not convertable  
String.prototype.parseColor = function() {  
  var color = '#';
  if (this.slice(0,4) == 'rgb(') {  
    var cols = this.slice(4,this.length-1).split(',');  
    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
  } else {  
    if (this.slice(0,1) == '#') {  
      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
      if (this.length==7) color = this.toLowerCase();  
    }  
  }  
  return (color.length==7 ? color : (arguments[0] || this));  
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
        Element.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);  
  element.setStyle({fontSize: (percent/100) + 'em'});   
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

Element.getInlineOpacity = function(element){
  return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + 0.5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
    },
    pulse: function(pos, pulses) { 
      pulses = pulses || 5; 
      return (
        ((pos % (1/pulses)) * pulses).round() == 0 ? 
              ((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
        );
    },
    spring: function(pos) { 
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
    
    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character), 
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') || 
        Object.isFunction(element)) && 
       (element.length))
      elements = element;
    else
      elements = $(element).childNodes;
      
    var options = Object.extend({
      speed: 0.1,
      delay: 0.0
    }, arguments[2] || { });
    var masterDelay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
    });
  },
  PAIRS: {
    'slide':  ['SlideDown','SlideUp'],
    'blind':  ['BlindDown','BlindUp'],
    'appear': ['Appear','Fade']
  },
  toggle: function(element, effect) {
    element = $(element);
    effect = (effect || 'appear').toLowerCase();
    var options = Object.extend({
      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ? 
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
  initialize: function() {
    this.effects  = [];
    this.interval = null;    
  },
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  add: function(effect) {
    var timestamp = new Date().getTime();
    
    var position = Object.isString(effect.options.queue) ? 
      effect.options.queue : effect.options.queue.position;
    
    switch(position) {
      case 'front':
        // move unstarted effects after this effect  
        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
            e.startOn  += effect.finishOn;
            e.finishOn += effect.finishOn;
          });
        break;
      case 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        break;
      case 'end':
        // start effect after last queued effect has finished
        timestamp = this.effects.pluck('finishOn').max() || timestamp;
        break;
    }
    
    effect.startOn  += timestamp;
    effect.finishOn += timestamp;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);
    
    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  remove: function(effect) {
    this.effects = this.effects.reject(function(e) { return e==effect });
    if (this.effects.length == 0) {
      clearInterval(this.interval);
      this.interval = null;
    }
  },
  loop: function() {
    var timePos = new Date().getTime();
    for(var i=0, len=this.effects.length;i<len;i++) 
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;
    
    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
    this.currentFrame = 0;
    this.state        = 'idle';
    this.startOn      = this.options.delay*1000;
    this.finishOn     = this.startOn+(this.options.duration*1000);
    this.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;
    
    eval('this.render = function(pos){ '+
      'if (this.state=="idle"){this.state="running";'+
      codeForEvent(this.options,'beforeSetup')+
      (this.setup ? 'this.setup();':'')+ 
      codeForEvent(this.options,'afterSetup')+
      '};if (this.state=="running"){'+
      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
      'this.position=pos;'+
      codeForEvent(this.options,'beforeUpdate')+
      (this.update ? 'this.update(pos);':'')+
      codeForEvent(this.options,'afterUpdate')+
      '}}');
    
    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).add(this);
  },
  loop: function(timePos) {
    if (timePos >= this.startOn) {
      if (timePos >= this.finishOn) {
        this.render(1.0);
        this.cancel();
        this.event('beforeFinish');
        if (this.finish) this.finish(); 
        this.event('afterFinish');
        return;  
      }
      var pos   = (timePos - this.startOn) / this.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).remove(this);
    this.state = 'finished';
  },
  event: function(eventName) {
    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
    if (this.options[eventName]) this.options[eventName](this);
  },
  inspect: function() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    this.effects.invoke('render', position);
  },
  finish: function(position) {
    this.effects.each( function(effect) {
      effect.render(1.0);
      effect.cancel();
      effect.event('beforeFinish');
      if (effect.finish) effect.finish(position);
      effect.event('afterFinish');
    });
  }
});

Effect.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(), 
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) : 
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    // make this work on IE on elements without 'layout'
    if (Prototype.Browser.IE && (!this.element.currentStyle || !this.element.currentStyle.hasLayout))
      this.element.setStyle({zoom: 1});
    var options = Object.extend({
      from: this.element.getOpacity() || 0.0,
      to:   1.0
    }, arguments[1] || { });
    this.start(options);
  },
  update: function(position) {
    this.element.setOpacity(position);
  }
});

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
    });
  }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
  return new Effect.Move(element, 
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};

Effect.Scale = Class.create(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      scaleX: true,
      scaleY: true,
      scaleContent: true,
      scaleFromCenter: false,
      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
      scaleFrom: 100.0,
      scaleTo:   percent
    }, arguments[2] || { });
    this.start(options);
  },
  setup: function() {
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = this.element.getStyle('position');
    
    this.originalStyle = { };
    ['top','left','width','height','fontSize'].each( function(k) {
      this.originalStyle[k] = this.element.style[k];
    }.bind(this));
      
    this.originalTop  = this.element.offsetTop;
    this.originalLeft = this.element.offsetLeft;
    
    var fontSize = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].each( function(fontSizeType) {
      if (fontSize.indexOf(fontSizeType)>0) {
        this.fontSize     = parseFloat(fontSize);
        this.fontSizeType = fontSizeType;
      }
    }.bind(this));
    
    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
    
    this.dims = null;
    if (this.options.scaleMode=='box')
      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
    if (/^content/.test(this.options.scaleMode))
      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
    if (!this.dims)
      this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
  },
  update: function(position) {
    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
    if (this.options.scaleContent && this.fontSize)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + 'px';
    if (this.options.scaleFromCenter) {
      var topd  = (height - this.dims[0])/2;
      var leftd = (width  - this.dims[1])/2;
      if (this.elementPositioning == 'absolute') {
        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
      } else {
        if (this.options.scaleY) d.top = -topd + 'px';
        if (this.options.scaleX) d.left = -leftd + 'px';
      }
    }
    this.element.setStyle(d);
  }
});

Effect.Highlight = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    // Prevent executing on elements not in the layout flow
    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldStyle = { };
    if (!this.options.keepBackgroundImage) {
      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
      this.element.setStyle({backgroundImage: 'none'});
    }
    if (!this.options.endcolor)
      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
    if (!this.options.restorecolor)
      this.options.restorecolor = this.element.getStyle('background-color');
    // init color calculations
    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
  },
  update: function(position) {
    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
  },
  finish: function() {
    this.element.setStyle(Object.extend(this.oldStyle, {
      backgroundColor: this.options.restorecolor
    }));
  }
});

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
    scrollOffsets = document.viewport.getScrollOffsets(),
    elementOffsets = $(element).cumulativeOffset(),
    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();  

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1] > max ? max : elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()) }
  );
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  var options = Object.extend({
    from: element.getOpacity() || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) { 
      if (effect.options.to!=0) return;
      effect.element.hide().setStyle({opacity: oldOpacity}); 
    }
  }, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show(); 
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = { 
    opacity: element.getInlineOpacity(), 
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  return new Effect.Parallel(
   [ new Effect.Scale(element, 200, 
      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
     Object.extend({ duration: 1.0, 
      beforeSetupInternal: function(effect) {
        Position.absolutize(effect.effects[0].element)
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

Effect.BlindUp = function(element) {
  element = $(element);
  element.makeClipping();
  return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false, 
      scaleX: false, 
      restoreAfterFinish: true,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping();
      } 
    }, arguments[1] || { })
  );
};

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    duration: 0.4,
    from: 0,
    transition: Effect.Transitions.flicker,
    afterFinishInternal: function(effect) {
      new Effect.Scale(effect.element, 1, { 
        duration: 0.3, scaleFromCenter: true,
        scaleX: false, scaleContent: false, restoreAfterFinish: true,
        beforeSetup: function(effect) { 
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      })
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned(); 
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        } 
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}) }}) }}) }}) }}) }});
};

Effect.SlideDown = function(element) {
  element = $(element).cleanWhitespace();
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false, 
    scaleFrom: window.opera ? 0 : 1,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
    }, arguments[1] || { })
  );
};

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false, 
    scaleX: false, 
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },  
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
    }
   }, arguments[1] || { })
  );
};

// Bug in opera makes the TD containing this element expand for a instance after finish 
Effect.Squish = function(element) {
  return new Effect.Scale(element, window.opera ? 1 : 0, { 
    restoreAfterFinish: true,
    beforeSetup: function(effect) {
      effect.element.makeClipping(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping(); 
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.full
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();    
  var initialMoveX, initialMoveY;
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0; 
      break;
    case 'top-right':
      initialMoveX = dims.width;
      initialMoveY = moveY = 0;
      moveX = -dims.width;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = dims.height;
      moveY = -dims.height;
      break;
    case 'bottom-right':
      initialMoveX = dims.width;
      initialMoveY = dims.height;
      moveX = -dims.width;
      moveY = -dims.height;
      break;
    case 'center':
      initialMoveX = dims.width / 2;
      initialMoveY = dims.height / 2;
      moveX = -dims.width / 2;
      moveY = -dims.height / 2;
      break;
  }
  
  return new Effect.Move(element, {
    x: initialMoveX,
    y: initialMoveY,
    duration: 0.01, 
    beforeSetup: function(effect) {
      effect.element.hide().makeClipping().makePositioned();
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
               effect.effects[0].element.setStyle({height: '0px'}).show(); 
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
             }
           }, options)
      )
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.none
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = dims.width;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = dims.height;
      break;
    case 'bottom-right':
      moveX = dims.width;
      moveY = dims.height;
      break;
    case 'center':  
      moveX = dims.width / 2;
      moveY = dims.height / 2;
      break;
  }
  
  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({            
         beforeStartInternal: function(effect) {
           effect.effects[0].element.makePositioned().makeClipping(); 
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { };
  var oldOpacity = element.getInlineOpacity();
  var transition = options.transition || Effect.Transitions.sinoidal;
  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
  reverser.bind(transition);
  return new Effect.Opacity(element, 
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
    }, options), {transition: reverser}));
};

Effect.Fold = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height };
  element.makeClipping();
  return new Effect.Scale(element, 5, Object.extend({   
    scaleContent: false,
    scaleX: false,
    afterFinishInternal: function(effect) {
    new Effect.Scale(element, 1, { 
      scaleContent: false, 
      scaleY: false,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });
    
    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        }
      }
    }
    this.start(options);
  },
  
  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return { 
        style: property.camelize(), 
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      )
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] = 
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) + 
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');
  
Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }
  
  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]); 
  });
  
  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(hash, property) {
      hash.set(property, css[property]);
      return hash;
    });
    if (!styles.opacity) styles.set('opacity', element.getOpacity());
    return styles;
  };
};

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element)
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) { 
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    }
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);

/****************************************************************/
/*  original filename controls.js                        */
/****************************************************************/


// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2007 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
//           (c) 2005-2007 Jon Tirsen (http://www.tirsen.com)
// Contributors:
//  Richard Livsey
//  Rahul Bhargava
//  Rob Wills
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

// Autocompleter.Base handles all the autocompletion functionality 
// that's independent of the data source for autocompletion. This
// includes drawing the autocompletion menu, observing keyboard
// and mouse events, and similar.
//
// Specific autocompleters need to provide, at the very least, 
// a getUpdatedChoices function that will be invoked every time
// the text inside the monitored textbox changes. This method 
// should get the text for which to provide autocompletion by
// invoking this.getToken(), NOT by directly accessing
// this.element.value. This is to allow incremental tokenized
// autocompletion. Specific auto-completion logic (AJAX, etc)
// belongs in getUpdatedChoices.
//
// Tokenized incremental autocompletion is enabled automatically
// when an autocompleter is instantiated with the 'tokens' option
// in the options parameter, e.g.:
// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
// will incrementally autocomplete with a comma as the token.
// Additionally, ',' in the above example can be replaced with
// a token array, e.g. { tokens: [',', '\n'] } which
// enables autocompletion on multiple tokens. This is most 
// useful when one of the tokens is \n (a newline), as it 
// allows smart autocompletion after linebreaks.

if(typeof Effect == 'undefined')
  throw("controls.js requires including script.aculo.us' effects.js library");

var Autocompleter = { }
Autocompleter.Base = Class.create({
  baseInitialize: function(element, update, options) {
    element          = $(element)
    this.element     = element; 
    this.update      = $(update);  
    this.hasFocus    = false; 
    this.changed     = false; 
    this.active      = false; 
    this.index       = 0;     
    this.entryCount  = 0;
    this.oldElementValue = this.element.value;

    if(this.setOptions)
      this.setOptions(options);
    else
      this.options = options || { };

    this.options.paramName    = this.options.paramName || this.element.name;
    this.options.tokens       = this.options.tokens || [];
    this.options.frequency    = this.options.frequency || 0.4;
    this.options.minChars     = this.options.minChars || 1;
    this.options.onShow       = this.options.onShow || 
      function(element, update){ 
        if(!update.style.position || update.style.position=='absolute') {
          update.style.position = 'absolute';
          Position.clone(element, update, {
            setHeight: false, 
            offsetTop: element.offsetHeight
          });
        }
        Effect.Appear(update,{duration:0.15});
      };
    this.options.onHide = this.options.onHide || 
      function(element, update){ new Effect.Fade(update,{duration:0.15}) };

    if(typeof(this.options.tokens) == 'string') 
      this.options.tokens = new Array(this.options.tokens);
    // Force carriage returns as token delimiters anyway
    if (!this.options.tokens.include('\n'))
      this.options.tokens.push('\n');

    this.observer = null;
    
    this.element.setAttribute('autocomplete','off');

    Element.hide(this.update);

    Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
    Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
  },

  show: function() {
    if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
    if(!this.iefix && 
      (Prototype.Browser.IE) &&
      (Element.getStyle(this.update, 'position')=='absolute')) {
      new Insertion.After(this.update, 
       '<iframe id="' + this.update.id + '_iefix" '+
       'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
       'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
      this.iefix = $(this.update.id+'_iefix');
    }
    if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
  },
  
  fixIEOverlapping: function() {
    Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
    this.iefix.style.zIndex = 1;
    this.update.style.zIndex = 2;
    Element.show(this.iefix);
  },

  hide: function() {
    this.stopIndicator();
    if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
    if(this.iefix) Element.hide(this.iefix);
  },

  startIndicator: function() {
    if(this.options.indicator) Element.show(this.options.indicator);
  },

  stopIndicator: function() {
    if(this.options.indicator) Element.hide(this.options.indicator);
  },

  onKeyPress: function(event) {
    if(this.active)
      switch(event.keyCode) {
       case Event.KEY_TAB:
       case Event.KEY_RETURN:
         this.selectEntry();
         Event.stop(event);
       case Event.KEY_ESC:
         this.hide();
         this.active = false;
         Event.stop(event);
         return;
       case Event.KEY_LEFT:
       case Event.KEY_RIGHT:
         return;
       case Event.KEY_UP:
         this.markPrevious();
         this.render();
         Event.stop(event);
         return;
       case Event.KEY_DOWN:
         this.markNext();
         this.render();
         Event.stop(event);
         return;
      }
     else 
       if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || 
         (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;

    this.changed = true;
    this.hasFocus = true;

    if(this.observer) clearTimeout(this.observer);
      this.observer = 
        setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
  },

  activate: function() {
    this.changed = false;
    this.hasFocus = true;
    this.getUpdatedChoices();
  },

  onHover: function(event) {
    var element = Event.findElement(event, 'LI');
    if(this.index != element.autocompleteIndex) 
    {
        this.index = element.autocompleteIndex;
        this.render();
    }
    Event.stop(event);
  },
  
  onClick: function(event) {
    var element = Event.findElement(event, 'LI');
    this.index = element.autocompleteIndex;
    this.selectEntry();
    this.hide();
  },
  
  onBlur: function(event) {
    // needed to make click events working
    setTimeout(this.hide.bind(this), 250);
    this.hasFocus = false;
    this.active = false;     
  }, 
  
  render: function() {
    if(this.entryCount > 0) {
      for (var i = 0; i < this.entryCount; i++)
        this.index==i ? 
          Element.addClassName(this.getEntry(i),"selected") : 
          Element.removeClassName(this.getEntry(i),"selected");
      if(this.hasFocus) { 
        this.show();
        this.active = true;
      }
    } else {
      this.active = false;
      this.hide();
    }
  },
  
  markPrevious: function() {
    if(this.index > 0) this.index--
      else this.index = this.entryCount-1;
    this.getEntry(this.index).scrollIntoView(true);
  },
  
  markNext: function() {
    if(this.index < this.entryCount-1) this.index++
      else this.index = 0;
    this.getEntry(this.index).scrollIntoView(false);
  },
  
  getEntry: function(index) {
    return this.update.firstChild.childNodes[index];
  },
  
  getCurrentEntry: function() {
    return this.getEntry(this.index);
  },
  
  selectEntry: function() {
    this.active = false;
    this.updateElement(this.getCurrentEntry());
  },

  updateElement: function(selectedElement) {
    if (this.options.updateElement) {
      this.options.updateElement(selectedElement);
      return;
    }
    var value = '';
    if (this.options.select) {
      var nodes = $(selectedElement).select('.' + this.options.select) || [];
      if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
    } else
      value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
    
    var bounds = this.getTokenBounds();
    if (bounds[0] != -1) {
      var newValue = this.element.value.substr(0, bounds[0]);
      var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
      if (whitespace)
        newValue += whitespace[0];
      this.element.value = newValue + value + this.element.value.substr(bounds[1]);
    } else {
      this.element.value = value;
    }
    this.oldElementValue = this.element.value;
    this.element.focus();
    
    if (this.options.afterUpdateElement)
      this.options.afterUpdateElement(this.element, selectedElement);
  },

  updateChoices: function(choices) {
    if(!this.changed && this.hasFocus) {
      this.update.innerHTML = choices;
      Element.cleanWhitespace(this.update);
      Element.cleanWhitespace(this.update.down());

      if(this.update.firstChild && this.update.down().childNodes) {
        this.entryCount = 
          this.update.down().childNodes.length;
        for (var i = 0; i < this.entryCount; i++) {
          var entry = this.getEntry(i);
          entry.autocompleteIndex = i;
          this.addObservers(entry);
        }
      } else { 
        this.entryCount = 0;
      }

      this.stopIndicator();
      this.index = 0;
      
      if(this.entryCount==1 && this.options.autoSelect) {
        this.selectEntry();
        this.hide();
      } else {
        this.render();
      }
    }
  },

  addObservers: function(element) {
    Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
    Event.observe(element, "click", this.onClick.bindAsEventListener(this));
  },

  onObserverEvent: function() {
    this.changed = false;   
    this.tokenBounds = null;
    if(this.getToken().length>=this.options.minChars) {
      this.getUpdatedChoices();
    } else {
      this.active = false;
      this.hide();
    }
    this.oldElementValue = this.element.value;
  },

  getToken: function() {
    var bounds = this.getTokenBounds();
    return this.element.value.substring(bounds[0], bounds[1]).strip();
  },

  getTokenBounds: function() {
    if (null != this.tokenBounds) return this.tokenBounds;
    var value = this.element.value;
    if (value.strip().empty()) return [-1, 0];
    var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
    var offset = (diff == this.oldElementValue.length ? 1 : 0);
    var prevTokenPos = -1, nextTokenPos = value.length;
    var tp;
    for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
      tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
      if (tp > prevTokenPos) prevTokenPos = tp;
      tp = value.indexOf(this.options.tokens[index], diff + offset);
      if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
    }
    return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
  }
});

Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
  var boundary = Math.min(newS.length, oldS.length);
  for (var index = 0; index < boundary; ++index)
    if (newS[index] != oldS[index])
      return index;
  return boundary;
};

Ajax.Autocompleter = Class.create(Autocompleter.Base, {
  initialize: function(element, update, url, options) {
    this.baseInitialize(element, update, options);
    this.options.asynchronous  = true;
    this.options.onComplete    = this.onComplete.bind(this);
    this.options.defaultParams = this.options.parameters || null;
    this.url                   = url;
  },

  getUpdatedChoices: function() {
    this.startIndicator();
    
    var entry = encodeURIComponent(this.options.paramName) + '=' + 
      encodeURIComponent(this.getToken());

    this.options.parameters = this.options.callback ?
      this.options.callback(this.element, entry) : entry;

    if(this.options.defaultParams) 
      this.options.parameters += '&' + this.options.defaultParams;
    
    new Ajax.Request(this.url, this.options);
  },

  onComplete: function(request) {
    this.updateChoices(request.responseText);
  }
});

// The local array autocompleter. Used when you'd prefer to
// inject an array of autocompletion options into the page, rather
// than sending out Ajax queries, which can be quite slow sometimes.
//
// The constructor takes four parameters. The first two are, as usual,
// the id of the monitored textbox, and id of the autocompletion menu.
// The third is the array you want to autocomplete from, and the fourth
// is the options block.
//
// Extra local autocompletion options:
// - choices - How many autocompletion choices to offer
//
// - partialSearch - If false, the autocompleter will match entered
//                    text only at the beginning of strings in the 
//                    autocomplete array. Defaults to true, which will
//                    match text at the beginning of any *word* in the
//                    strings in the autocomplete array. If you want to
//                    search anywhere in the string, additionally set
//                    the option fullSearch to true (default: off).
//
// - fullSsearch - Search anywhere in autocomplete array strings.
//
// - partialChars - How many characters to enter before triggering
//                   a partial match (unlike minChars, which defines
//                   how many characters are required to do any match
//                   at all). Defaults to 2.
//
// - ignoreCase - Whether to ignore case when autocompleting.
//                 Defaults to true.
//
// It's possible to pass in a custom function as the 'selector' 
// option, if you prefer to write your own autocompletion logic.
// In that case, the other options above will not apply unless
// you support them.

Autocompleter.Local = Class.create(Autocompleter.Base, {
  initialize: function(element, update, array, options) {
    this.baseInitialize(element, update, options);
    this.options.array = array;
  },

  getUpdatedChoices: function() {
    this.updateChoices(this.options.selector(this));
  },

  setOptions: function(options) {
    this.options = Object.extend({
      choices: 10,
      partialSearch: true,
      partialChars: 2,
      ignoreCase: true,
      fullSearch: false,
      selector: function(instance) {
        var ret       = []; // Beginning matches
        var partial   = []; // Inside matches
        var entry     = instance.getToken();
        var count     = 0;

        for (var i = 0; i < instance.options.array.length &&  
          ret.length < instance.options.choices ; i++) { 

          var elem = instance.options.array[i];
          var foundPos = instance.options.ignoreCase ? 
            elem.toLowerCase().indexOf(entry.toLowerCase()) : 
            elem.indexOf(entry);

          while (foundPos != -1) {
            if (foundPos == 0 && elem.length != entry.length) { 
              ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + 
                elem.substr(entry.length) + "</li>");
              break;
            } else if (entry.length >= instance.options.partialChars && 
              instance.options.partialSearch && foundPos != -1) {
              if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
                  elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
                  foundPos + entry.length) + "</li>");
                break;
              }
            }

            foundPos = instance.options.ignoreCase ? 
              elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : 
              elem.indexOf(entry, foundPos + 1);

          }
        }
        if (partial.length)
          ret = ret.concat(partial.slice(0, instance.options.choices - ret.length))
        return "<ul>" + ret.join('') + "</ul>";
      }
    }, options || { });
  }
});

// AJAX in-place editor and collection editor
// Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).

// Use this if you notice weird scrolling problems on some browsers,
// the DOM might be a bit confused when this gets called so do this
// waits 1 ms (with setTimeout) until it does the activation
Field.scrollFreeActivate = function(field) {
  setTimeout(function() {
    Field.activate(field);
  }, 1);
}

Ajax.InPlaceEditor = Class.create({
  initialize: function(element, url, options) {
    this.url = url;
    this.element = element = $(element);
    this.prepareOptions();
    this._controls = { };
    arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
    Object.extend(this.options, options || { });
    if (!this.options.formId && this.element.id) {
      this.options.formId = this.element.id + '-inplaceeditor';
      if ($(this.options.formId))
        this.options.formId = '';
    }
    if (this.options.externalControl)
      this.options.externalControl = $(this.options.externalControl);
    if (!this.options.externalControl)
      this.options.externalControlOnly = false;
    this._originalBackground = this.element.getStyle('background-color') || 'transparent';
    this.element.title = this.options.clickToEditText;
    this._boundCancelHandler = this.handleFormCancellation.bind(this);
    this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
    this._boundFailureHandler = this.handleAJAXFailure.bind(this);
    this._boundSubmitHandler = this.handleFormSubmission.bind(this);
    this._boundWrapperHandler = this.wrapUp.bind(this);
    this.registerListeners();
  },
  checkForEscapeOrReturn: function(e) {
    if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
    if (Event.KEY_ESC == e.keyCode)
      this.handleFormCancellation(e);
    else if (Event.KEY_RETURN == e.keyCode)
      this.handleFormSubmission(e);
  },
  createControl: function(mode, handler, extraClasses) {
    var control = this.options[mode + 'Control'];
    var text = this.options[mode + 'Text'];
    if ('button' == control) {
      var btn = document.createElement('input');
      btn.type = 'submit';
      btn.value = text;
      btn.className = 'editor_' + mode + '_button';
      if ('cancel' == mode)
        btn.onclick = this._boundCancelHandler;
      this._form.appendChild(btn);
      this._controls[mode] = btn;
    } else if ('link' == control) {
      var link = document.createElement('a');
      link.href = '#';
      link.appendChild(document.createTextNode(text));
      link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
      link.className = 'editor_' + mode + '_link';
      if (extraClasses)
        link.className += ' ' + extraClasses;
      this._form.appendChild(link);
      this._controls[mode] = link;
    }
  },
  createEditField: function() {
    var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
    var fld;
    if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
      fld = document.createElement('input');
      fld.type = 'text';
      var size = this.options.size || this.options.cols || 0;
      if (0 < size) fld.size = size;
    } else {
      fld = document.createElement('textarea');
      fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
      fld.cols = this.options.cols || 40;
    }
    fld.name = this.options.paramName;
    fld.value = text; // No HTML breaks conversion anymore
    fld.className = 'editor_field';
    if (this.options.submitOnBlur)
      fld.onblur = this._boundSubmitHandler;
    this._controls.editor = fld;
    if (this.options.loadTextURL)
      this.loadExternalText();
    this._form.appendChild(this._controls.editor);
  },
  createForm: function() {
    var ipe = this;
    function addText(mode, condition) {
      var text = ipe.options['text' + mode + 'Controls'];
      if (!text || condition === false) return;
      ipe._form.appendChild(document.createTextNode(text));
    };
    this._form = $(document.createElement('form'));
    this._form.id = this.options.formId;
    this._form.addClassName(this.options.formClassName);
    this._form.onsubmit = this._boundSubmitHandler;
    this.createEditField();
    if ('textarea' == this._controls.editor.tagName.toLowerCase())
      this._form.appendChild(document.createElement('br'));
    if (this.options.onFormCustomization)
      this.options.onFormCustomization(this, this._form);
    addText('Before', this.options.okControl || this.options.cancelControl);
    this.createControl('ok', this._boundSubmitHandler);
    addText('Between', this.options.okControl && this.options.cancelControl);
    this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
    addText('After', this.options.okControl || this.options.cancelControl);
  },
  destroy: function() {
    if (this._oldInnerHTML)
      this.element.innerHTML = this._oldInnerHTML;
    this.leaveEditMode();
    this.unregisterListeners();
  },
  enterEditMode: function(e) {
    if (this._saving || this._editing) return;
    this._editing = true;
    this.triggerCallback('onEnterEditMode');
    if (this.options.externalControl)
      this.options.externalControl.hide();
    this.element.hide();
    this.createForm();
    this.element.parentNode.insertBefore(this._form, this.element);
    if (!this.options.loadTextURL)
      this.postProcessEditField();
    if (e) Event.stop(e);
  },
  enterHover: function(e) {
    if (this.options.hoverClassName)
      this.element.addClassName(this.options.hoverClassName);
    if (this._saving) return;
    this.triggerCallback('onEnterHover');
  },
  getText: function() {
    return this.element.innerHTML;
  },
  handleAJAXFailure: function(transport) {
    this.triggerCallback('onFailure', transport);
    if (this._oldInnerHTML) {
      this.element.innerHTML = this._oldInnerHTML;
      this._oldInnerHTML = null;
    }
  },
  handleFormCancellation: function(e) {
    this.wrapUp();
    if (e) Event.stop(e);
  },
  handleFormSubmission: function(e) {
    var form = this._form;
    var value = $F(this._controls.editor);
    this.prepareSubmission();
    var params = this.options.callback(form, value) || '';
    if (Object.isString(params))
      params = params.toQueryParams();
    params.editorId = this.element.id;
    if (this.options.htmlResponse) {
      var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: params,
        onComplete: this._boundWrapperHandler,
        onFailure: this._boundFailureHandler
      });
      new Ajax.Updater({ success: this.element }, this.url, options);
    } else {
      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: params,
        onComplete: this._boundWrapperHandler,
        onFailure: this._boundFailureHandler
      });
      new Ajax.Request(this.url, options);
    }
    if (e) Event.stop(e);
  },
  leaveEditMode: function() {
    this.element.removeClassName(this.options.savingClassName);
    this.removeForm();
    this.leaveHover();
    this.element.style.backgroundColor = this._originalBackground;
    this.element.show();
    if (this.options.externalControl)
      this.options.externalControl.show();
    this._saving = false;
    this._editing = false;
    this._oldInnerHTML = null;
    this.triggerCallback('onLeaveEditMode');
  },
  leaveHover: function(e) {
    if (this.options.hoverClassName)
      this.element.removeClassName(this.options.hoverClassName);
    if (this._saving) return;
    this.triggerCallback('onLeaveHover');
  },
  loadExternalText: function() {
    this._form.addClassName(this.options.loadingClassName);
    this._controls.editor.disabled = true;
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        this._form.removeClassName(this.options.loadingClassName);
        var text = transport.responseText;
        if (this.options.stripLoadedTextTags)
          text = text.stripTags();
        this._controls.editor.value = text;
        this._controls.editor.disabled = false;
        this.postProcessEditField();
      }.bind(this),
      onFailure: this._boundFailureHandler
    });
    new Ajax.Request(this.options.loadTextURL, options);
  },
  postProcessEditField: function() {
    var fpc = this.options.fieldPostCreation;
    if (fpc)
      $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
  },
  prepareOptions: function() {
    this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
    Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
    [this._extraDefaultOptions].flatten().compact().each(function(defs) {
      Object.extend(this.options, defs);
    }.bind(this));
  },
  prepareSubmission: function() {
    this._saving = true;
    this.removeForm();
    this.leaveHover();
    this.showSaving();
  },
  registerListeners: function() {
    this._listeners = { };
    var listener;
    $H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
      listener = this[pair.value].bind(this);
      this._listeners[pair.key] = listener;
      if (!this.options.externalControlOnly)
        this.element.observe(pair.key, listener);
      if (this.options.externalControl)
        this.options.externalControl.observe(pair.key, listener);
    }.bind(this));
  },
  removeForm: function() {
    if (!this._form) return;
    this._form.remove();
    this._form = null;
    this._controls = { };
  },
  showSaving: function() {
    this._oldInnerHTML = this.element.innerHTML;
    this.element.innerHTML = this.options.savingText;
    this.element.addClassName(this.options.savingClassName);
    this.element.style.backgroundColor = this._originalBackground;
    this.element.show();
  },
  triggerCallback: function(cbName, arg) {
    if ('function' == typeof this.options[cbName]) {
      this.options[cbName](this, arg);
    }
  },
  unregisterListeners: function() {
    $H(this._listeners).each(function(pair) {
      if (!this.options.externalControlOnly)
        this.element.stopObserving(pair.key, pair.value);
      if (this.options.externalControl)
        this.options.externalControl.stopObserving(pair.key, pair.value);
    }.bind(this));
  },
  wrapUp: function(transport) {
    this.leaveEditMode();
    // Can't use triggerCallback due to backward compatibility: requires
    // binding + direct element
    this._boundComplete(transport, this.element);
  }
});

Object.extend(Ajax.InPlaceEditor.prototype, {
  dispose: Ajax.InPlaceEditor.prototype.destroy
});

Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
  initialize: function($super, element, url, options) {
    this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
    $super(element, url, options);
  },

  createEditField: function() {
    var list = document.createElement('select');
    list.name = this.options.paramName;
    list.size = 1;
    this._controls.editor = list;
    this._collection = this.options.collection || [];
    if (this.options.loadCollectionURL)
      this.loadCollection();
    else
      this.checkForExternalText();
    this._form.appendChild(this._controls.editor);
  },

  loadCollection: function() {
    this._form.addClassName(this.options.loadingClassName);
    this.showLoadingText(this.options.loadingCollectionText);
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        var js = transport.responseText.strip();
        if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
          throw 'Server returned an invalid collection representation.';
        this._collection = eval(js);
        this.checkForExternalText();
      }.bind(this),
      onFailure: this.onFailure
    });
    new Ajax.Request(this.options.loadCollectionURL, options);
  },

  showLoadingText: function(text) {
    this._controls.editor.disabled = true;
    var tempOption = this._controls.editor.firstChild;
    if (!tempOption) {
      tempOption = document.createElement('option');
      tempOption.value = '';
      this._controls.editor.appendChild(tempOption);
      tempOption.selected = true;
    }
    tempOption.update((text || '').stripScripts().stripTags());
  },

  checkForExternalText: function() {
    this._text = this.getText();
    if (this.options.loadTextURL)
      this.loadExternalText();
    else
      this.buildOptionList();
  },

  loadExternalText: function() {
    this.showLoadingText(this.options.loadingText);
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        this._text = transport.responseText.strip();
        this.buildOptionList();
      }.bind(this),
      onFailure: this.onFailure
    });
    new Ajax.Request(this.options.loadTextURL, options);
  },

  buildOptionList: function() {
    this._form.removeClassName(this.options.loadingClassName);
    this._collection = this._collection.map(function(entry) {
      return 2 === entry.length ? entry : [entry, entry].flatten();
    });
    var marker = ('value' in this.options) ? this.options.value : this._text;
    var textFound = this._collection.any(function(entry) {
      return entry[0] == marker;
    }.bind(this));
    this._controls.editor.update('');
    var option;
    this._collection.each(function(entry, index) {
      option = document.createElement('option');
      option.value = entry[0];
      option.selected = textFound ? entry[0] == marker : 0 == index;
      option.appendChild(document.createTextNode(entry[1]));
      this._controls.editor.appendChild(option);
    }.bind(this));
    this._controls.editor.disabled = false;
    Field.scrollFreeActivate(this._controls.editor);
  }
});

//**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
//**** This only  exists for a while,  in order to  let ****
//**** users adapt to  the new API.  Read up on the new ****
//**** API and convert your code to it ASAP!            ****

Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
  if (!options) return;
  function fallback(name, expr) {
    if (name in options || expr === undefined) return;
    options[name] = expr;
  };
  fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' :
    options.cancelLink == options.cancelButton == false ? false : undefined)));
  fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' :
    options.okLink == options.okButton == false ? false : undefined)));
  fallback('highlightColor', options.highlightcolor);
  fallback('highlightEndColor', options.highlightendcolor);
};

Object.extend(Ajax.InPlaceEditor, {
  DefaultOptions: {
    ajaxOptions: { },
    autoRows: 3,                                // Use when multi-line w/ rows == 1
    cancelControl: 'link',                      // 'link'|'button'|false
    cancelText: 'cancel',
    clickToEditText: 'Click to edit',
    externalControl: null,                      // id|elt
    externalControlOnly: false,
    fieldPostCreation: 'activate',              // 'activate'|'focus'|false
    formClassName: 'inplaceeditor-form',
    formId: null,                               // id|elt
    highlightColor: '#ffff99',
    highlightEndColor: '#ffffff',
    hoverClassName: '',
    htmlResponse: true,
    loadingClassName: 'inplaceeditor-loading',
    loadingText: 'Loading...',
    okControl: 'button',                        // 'link'|'button'|false
    okText: 'ok',
    paramName: 'value',
    rows: 1,                                    // If 1 and multi-line, uses autoRows
    savingClassName: 'inplaceeditor-saving',
    savingText: 'Saving...',
    size: 0,
    stripLoadedTextTags: false,
    submitOnBlur: false,
    textAfterControls: '',
    textBeforeControls: '',
    textBetweenControls: ''
  },
  DefaultCallbacks: {
    callback: function(form) {
      return Form.serialize(form);
    },
    onComplete: function(transport, element) {
      // For backward compatibility, this one is bound to the IPE, and passes
      // the element directly.  It was too often customized, so we don't break it.
      new Effect.Highlight(element, {
        startcolor: this.options.highlightColor, keepBackgroundImage: true });
    },
    onEnterEditMode: null,
    onEnterHover: function(ipe) {
      ipe.element.style.backgroundColor = ipe.options.highlightColor;
      if (ipe._effect)
        ipe._effect.cancel();
    },
    onFailure: function(transport, ipe) {
      alert('Error communication with the server: ' + transport.responseText.stripTags());
    },
    onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls.
    onLeaveEditMode: null,
    onLeaveHover: function(ipe) {
      ipe._effect = new Effect.Highlight(ipe.element, {
        startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor,
        restorecolor: ipe._originalBackground, keepBackgroundImage: true
      });
    }
  },
  Listeners: {
    click: 'enterEditMode',
    keydown: 'checkForEscapeOrReturn',
    mouseover: 'enterHover',
    mouseout: 'leaveHover'
  }
});

Ajax.InPlaceCollectionEditor.DefaultOptions = {
  loadingCollectionText: 'Loading options...'
};

// Delayed observer, like Form.Element.Observer, 
// but waits for delay after last key input
// Ideal for live-search fields

Form.Element.DelayedObserver = Class.create({
  initialize: function(element, delay, callback) {
    this.delay     = delay || 0.5;
    this.element   = $(element);
    this.callback  = callback;
    this.timer     = null;
    this.lastValue = $F(this.element); 
    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
  },
  delayedListener: function(event) {
    if(this.lastValue == $F(this.element)) return;
    if(this.timer) clearTimeout(this.timer);
    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
    this.lastValue = $F(this.element);
  },
  onTimerEvent: function() {
    this.timer = null;
    this.callback(this.element, $F(this.element));
  }
});

/****************************************************************/
/*  original filename patch_prototype.js                        */
/****************************************************************/


// zsombor: add authenticity_token to *all* ajax requests.
Ajax.Base.prototype.initialize = Ajax.Base.prototype.initialize.wrap(
  function(original, options){
    if(window._token){
      if(Object.isString(options.parameters)){
        options.parameters = options.parameters.toQueryParams();
      } else {
        options.parameters = options.parameters || {};
      }
      Object.extend(options.parameters, { authenticity_token: window._token});
    }
    return original(options);
  });
  
/*
// we don't need autohide any more (#247)
Autocompleter.Local.prototype.getUpdatedChoices = function() {
  setTimeout(this.hide.bind(this), 10000);
  this.updateChoices(this.options.selector(this));
}
*/
Element.addMethods({ 
  show_or_hide: function(element, bool) {
    if(bool) {
      element.show();
    } else {
      element.hide()
    }
    return bool;
  }
})
/****************************************************************/
/*  original filename fingertips/lightbox.js                        */
/****************************************************************/


/**
 * Gets scroll position of page. It is compatible with IE and "CSS1Compat" mode. #728
 * @See http://javascript.royh.cn/window/scrollx-2-0-scrolly.html
 * @param direction - must one of 'Top' and 'Left'
 *
 * @returns value of specified scroll position. If argument is not correct returns 0.
 */
function getWindowScrollPosition(direction)
{
  if ('Top' != direction && 'Left' != direction)
    return 0;

  var scroll = 'Left' == direction ? window.scrollX : window.scrollY;

  if (scroll !== undefined)
    return scroll;

  // IE does not support scrollX and scrollY properties so calculate them in another way.
  var parentNode = document.compatMode == "CSS1Compat" ? 'parentNode.' : '';
  
  try
  {
    scroll = eval("document.body." + parentNode + "scroll" + direction);
  }catch(e){alert (e)}
  return scroll;
}

var LightBox = Class.create({
  // autodismiss - if true then click anywhere closes lightbox. To use links you should 
  //               assign javascript to onclick attribute (:method=>:get in link_to). Default is false
  // content - may be element or a string containing HTML code
  initialize: function(elements, options) {
    this.options = $H({content: false, code: false, type: 'white', auto: false, url: false, autodismiss: false}).merge(options);
    this.container = $('container');
    
    this.element_for_content = false;
    try {
      // Lighbox content is an element
      if (typeof this.options.get('content')=='object')
        this.element_for_content = this.options.get('content').remove();
    } catch (e) { }

    if (this.element_for_content) {
      this.options.set('content', '');
      if (document.location.hash + '_box' == '#' + this.element_for_content.id)
        this.options.set('auto', true);
    }

    $A([elements]).flatten().each(function(element) {
      element.observe('click', this.open.bindAsEventListener(this));
    }.bind(this));
    
    if (this.options.get('auto'))
      this.open();
  },
  
  open: function(event) {
    if ($('lightbox')) $('lightbox').lightbox_object.close(event);

    this.container.insert({bottom: this.template.evaluate(this.options)});
    this.overlay = $('overlay');
    this.lightbox = $('lightbox');
    $('lightbox').lightbox_object = this;

    this.caller = null;
    if (event) this.caller = event.element();
    
    var background_element = this.lightbox.select('.background').first();
    var content_element = $$('#lightbox .content').first();
    
    if (this.element_for_content) {
      content_element.appendChild(this.element_for_content);
      document.location.hash = '#' + this.element_for_content.id.substring(0, this.element_for_content.id.length-4);
    }
    
    if (this.options.get('url')) {
      var url = this.options.get('url')
      new Ajax.Request(url,
        {
          method:'get',
          asynchronous: false,
          onSuccess: function(transport){
            content_element.replace(transport.responseText)            
            if (this.options.get('afterOpen'))
                this.options.get('afterOpen').bind(this)();
          }.bind(this),
          onFailure: function(){
            // Default message according to #1185
            alert('There is a problem to connect to the server. Please, try again later.');
          }
        });
    }
    
    if (this.options.get('code'))
      eval(this.options.get('code'));

    // remember old scroll position (#405)
    old_scrollX = getWindowScrollPosition('Left');
    old_scrollY = getWindowScrollPosition('Top');

    this.container.scrollTo();
    
    var lightbox_width = this.lightbox.getWidth();
    var background_height = background_element.getHeight();

    var from_left = 0;
    var from_top = 0;
    if (event) {
      from_left = event.pointerX() - this.container.cumulativeOffset()['left'];
      from_top = event.pointerY() - 150;
    }

    if (from_top < 0)
      from_top = 0;
    if (from_top > this.container.getHeight() - 300)
      from_top = this.container.getHeight() - 300;
    if (from_left < 150)
      from_left = 150;
    if (from_left > 850)
      from_left = 850;


    /* Like mentioned in Ticket #552 LightBox should be centered horizontally in <body> */
    var to_margin_left = Math.round(($('body').getWidth() - lightbox_width) / 2) + 'px';
    var to_top = this.lightbox.getStyle('top');

    this.lightbox.setStyle({width: '200px'});
    background_element.setStyle({height: '110px'});
    this.lightbox.setStyle({marginLeft: '-150px', left: from_left + 'px', top: from_top + 'px'});
    this.lightbox.hide();
    this.lightbox.setStyle({visibility: 'visible'});
    content_element.hide();

    new Effect.Parallel([
      new Effect.Appear(this.lightbox, {from: 0.15, sync: true}),
      new Effect.Morph(this.lightbox, {style: {width: lightbox_width + 'px'}, sync: true}),
      new Effect.Morph(background_element, {style: {height: background_height + 'px'}, sync: true}),
      new Effect.Morph(this.lightbox, {style: {marginLeft: to_margin_left, left: '0px', top: to_top}, sync: true})
      ], {duration: .2});

    var lightboxInstance = this;
    new Effect.Parallel([
      new Effect.Appear(content_element, {
        duration: .2, sync: true,
        afterFinish: function() {
          background_element.setStyle({height: 'auto'});
          lightboxInstance.afterShowInternal();
        }})
    ], {duration: .2, delay: .2});
    
    this.close_binding = this.close.bindAsEventListener(this);
    if (this.options.get('autodismiss')) {
      this.overlay.style.cursor = 'pointer';
      this.lightbox.style.cursor = 'pointer';
      document.observe('click', this.close_binding);
    } else {
      this.overlay.style.cursor = 'auto';
      this.lightbox.style.cursor = 'auto';
      this.initCloseElements();
    }
    if (event) Event.stop(event);

    if (!this.options.get('url') &&
         this.options.get('afterOpen'))
         this.options.get('afterOpen').bind(this)();
  },
  
  close: function(event) {
      if (!this.close_binding) return;

      document.stopObserving('click', this.close_binding);
      this.close_binding = null;

      this.lightbox.remove();
      this.overlay.remove();
      
      if (this.element_for_content) {
        document.location.hash = '#TODO';
        this.options.set('auto', false);
      }
    if (event) Event.stop(event);
    // recover scroll position
    window.scrollTo(old_scrollX, old_scrollY);
  },

  afterShowInternal: function() {
    if (this.options.get('afterShow'))
         this.options.get('afterShow')();
  },

  initCloseElements: function() {
    $$('div.lightbox-window .container .close').invoke('observe', 'click', this.close_binding);
  },

  template: new Template('<div id="overlay"> </div> <div id="lightbox" class="lightbox-window #{type}" style="visibility: hidden;"> <div class="border-t"><div></div></div> <div class="border-b"><div></div></div> <div class="border-l"><div></div></div> <div class="border-r"><div></div></div> <div class="border-tl"></div> <div class="border-tr"></div> <div class="border-br"></div> <div class="border-bl"></div> <div class="container"> <div class="background"> <div class="content"> #{content} </div> </div> <a href="#" class="close close-button" title="Close"><span>Close</span></a> </div> </div>')
});

/****************************************************************/
/*  original filename rollover.js                        */
/****************************************************************/


/*
 * Rollover JS functionality
 *
 */


// Due to bugs of Prototip library we had to use accurate version of Tips.hideAll()
function rollover_accurate_hideAll() {
  // Try to hide tips for all presented in DOM elements
  Tips.visible.each(function(tip_element) {
    if ($(tip_element) && $(tip_element.parentNode))
      tip_element.prototip.hide();
  });

  // if Prototip fails to hide something (usually when AJAX request removes tip caller while
  // tip was being visible
  if (Tips.visible.length > 0) {
    $$('div.prototip').each(function(tip_div) {
      if (tip_div.visible()) tip_div.remove();
    });
    
    Tips.visible = [];
  }
}



// Initialize rollover tips
// for all elements marked by .rollover_tip class
// and remove this stub class
function initialize_tips() {
  rollover_accurate_hideAll();

  $$('.rollover_tip', '.rollover_yml_tip').each(function(element) {
    element.rollover = new Tip(element,
            { style: (element.className == 'rollover_tip') ? 'item_tip' : 'yml_tip',
              ajax: { url:   '/rollover',
                      options: {
                        parameters: element.attributes.rel.value.evalJSON()
                      }
                    }
            }).wrapper;

    element.observe('prototip:shown', rollover_relocate)
    element.observe('prototip:shown', rollover_common_js_init)
    element.removeClassName("rollover_tip");
  });
}





function initialize_treemap_tips() {
  rollover_accurate_hideAll();

  $$('.treemap_tip').each(function(element) {
    if (element.up('div.treemap_image')) {
      var options = element.attributes.rel.value.evalJSON();

      var lhook   = {target: 'topRight', tip: 'topLeft'};
      var loffset = {x: 4, y: 0};

      if ((options.hook) && (options.hook == 'right')) {
          lhook   = {target: 'topLeft',  tip: 'topRight'};
          loffset = {x: -4, y: 0};
      }

      var lclassName = 'treemap_tip';
      if (options.extraclass) lclassName = lclassName + ' ' + options.extraclass;

      element.rollover = new Tip(element,
              { style:  'treemap_tip',
                hook:   lhook,
                offset: loffset,
                className: lclassName,
                target: element.up('div.treemap_image'),

                ajax: { url:   '/rollover/treemap',
                        options: {
                          parameters: options.ajax
                        }
                      }
              }).wrapper;

      element.observe('prototip:shown', rollover_treemap_js_init);
      element.observe('prototip:shown', rollover_truncate)
      element.removeClassName("treemap_tip");
    }
  });
}






function rollover_treemap_js_init() {
  if (this.rollover.initialized) return;

  // 1. Make it transparent
  this.rollover.addClassName('prototip_transparent');

  rollover_common_js_init.bind(this)();

  this.rollover.initialized = true;
}





// Accurately moves rollover according to Rollover specs (and Ticket #658)
function rollover_relocate() {
  if (!$(this.id)) {
    this.rollover.hide();
    return;
  }

  var body     = $('body');

  var mX = body.viewportOffset().left + body.getWidth()  -
           this.rollover.viewportOffset().left - this.rollover.getWidth();
  var mY = body.viewportOffset().top  + body.getHeight() -
           this.rollover.viewportOffset().top  - this.rollover.getHeight();
  mX = (mX < 0) ? mX : 0;
  mY = (mY < 0) ? mY : 0;

  this.rollover.setStyle({ left: this.rollover.offsetLeft + mX + 'px',
                           top:  this.rollover.offsetTop  + mY + 'px'
                        });
}


function rollover_common_js_init() {
  if (this.rollover.initialized) return;

  // 1. Init .login elements to raise login_box
  if (document.login_box)
    this.rollover.select('.login').invoke('observe', 'click',
                                          document.login_box.open.bindAsEventListener(document.login_box));

  // 2. Init lightboxes (media rollovers)
  initialize_lb(this.rollover);

  this.rollover.initialized = true;
}



function rollover_truncate() {
  var content = this.rollover.down('.rollover_window');
  var element = content.down('.rollover_description');
  var maxHeight = content.down('.stats').offsetTop -
                  element.offsetTop -
                  content.down('.more').getHeight();

  domTextTruncate(element, maxHeight);
}
/****************************************************************/
/*  original filename admin.js                        */
/****************************************************************/


var hRelatedListboxes = {
  'explore_available': 'explore_featured',
  'explore_featured': 'explore_available',
  'posts_available': 'posts_featured',
  'posts_featured': 'posts_available'
  }

var EXPLORE_IDS = ['explore_available', 'explore_featured'];
var DISCOVER_IDS = ['discover_featured'];
var POSTS_IDS = ['posts_available', 'posts_featured'];

function moveToFeatured(objSelFrom, objSelTo)
{
  if (!objSelFrom || !objSelTo)
  {
    // Unexpected behaviour
    throw "objSelFrom or objSelTo is null or undefined";
  }
  objSelFrom = $(objSelFrom);
  objSelTo = $(objSelTo);

  if (objSelFrom.selectedIndex == -1)
    return;
    
  var value = objSelFrom.options[objSelFrom.selectedIndex].value
  var text = objSelFrom.options[objSelFrom.selectedIndex].text
  
  if (!valueExists(objSelTo, value))
  {
    bSelectDefault = !isExploreSection(objSelTo.id);
    addOption(objSelTo, text, value, bSelectDefault);
    changeSelection(objSelFrom, objSelFrom.selectedIndex + 1);
  }
  else
  {
    alert("Such value already exists");
  }
}

function addToFeatured()
{
  var oListBox = $('discover_featured');
  var id = $('discover_item_id').value;

  if (!id)
    return;
  var filter_type = getSelectedRadioValue('discover_item_type');
  var item_type = getItemTypeByFilterType(filter_type);
  
  var value = [item_type, id].join('_');
  
  var text = id + ' (Id=' + id + ')';
  if (filter_type == 'all')
  {
    text = item_type + ": " + text;
  }
  
  if (!valueExists(oListBox, value))
  {
    addOption(oListBox, text, value, true);
    changeSelection(oListBox, oListBox.selectedIndex + 1);
  }
  else
  {
    alert("Such value already exists");
  }
}

function removeFromFeatured(objSelFrom)
{
  objSelFrom = $(objSelFrom);

  if (objSelFrom.selectedIndex == -1)
    return;

  var selectedIndex = objSelFrom.selectedIndex;
  objSelFrom.remove(selectedIndex);
  changeSelection(objSelFrom, selectedIndex);
  
  objSelFrom.onchange();
  updateCount(objSelFrom);
}


function onAdminAvailablePostsChanged(url)
{
  document.location.href = url;
}

function onSelectionChanged(objSel)
{
  var bDisable = objSel.selectedIndex == -1;
  var button = null;

  switch (objSel.id)
  {
    case 'explore_available': button = $('move_to_explore'); break;
    case 'explore_featured':  button = $('remove_from_explore'); break;
    case 'discover_featured': button = $('remove_from_discover'); break;
    case 'posts_available':   button = $('move_to_posts'); break;
    case 'posts_featured':    button = $('remove_from_posts'); break;
  }
  
  if (!button)
    throw "Undefined action for " + objSel.id;
    
  button.disabled = bDisable;
  
  setPreview(objSel);
}

function onFocus(oListBox)
{
  clearRelatedSelection(oListBox);
}

function onTypeChanged(event, url)
{
  document.location.href = url
}


function moveUp(oListbox)
{
  oListbox = $(oListbox);
  if (oListbox.selectedIndex == -1)
    return;
  shiftUpOption (oListbox, oListbox.selectedIndex);
}

function moveDown(oListbox)
{
  oListbox = $(oListbox);
  if (oListbox.selectedIndex == -1)
    return;
  shiftDownOption (oListbox, oListbox.selectedIndex);
}

function onKeyPress(event)
{
  if (13 == event.keyCode)
  {
    addToFeatured('discover_featured');
    return false;
  }
  
  return true;
}

function requestThumbnailSrc(packedID, listboxID)
{
  if (addRequestID(packedID))
  {
    AjaxRequestWithSpinner('/admin/get_additional_data',
                           {parameters: {packed_id: packedID, lb_id: listboxID}},
                           '',
                           ''
    )
  }
}


// Is called when request for image src is finished
function updateRequestedData(packedID, hashData, lbID)
{

  var data = hashData.evalJSON();
  putItemData(packedID, data);
  
  var oListBox = $(lbID);
  setPreview(oListBox);
  removeRequestedID(packedID);
}

// AJAX data prepare functions
function get_explore_params()
{
  return get_select_options('explore_featured');
}

function get_discover_params()
{
  return get_select_options('discover_featured');
}

function get_posts_params()
{
  return get_select_options('posts_featured');
}

function get_select_options(id)
{
  var items = $A($(id).options).map(function(e){return e.value}).toJSON();
  return items;
}
// End AJAX data prepare functions

/**********************************
*   Private functions             *
***********************************/
// Common Helper methods
function setPreview(oListBox)
{
  var id = oListBox.id;
  var oPreviewImg = null;
  var oPreviewTitle = null;
  var oPreviewMeta = null;
  
  if (isExploreSection(id))
  {
    oPreviewImg = $('explore_preview');
  }
  else if (isDiscoverSection(id))
  {
    oPreviewImg = $('discover_preview');
    oPreviewTitle = $('discover_preview_title');
  }
  else if (isPostsSection(id))
  {
    oPreviewTitle = $('posts_preview_title');
    oPreviewMeta = $('posts_preview_meta');
  }
  else
  {
    throw "Undefined section for " + oListBox.id;
  }

  
  setPreviewData(oListBox, oPreviewImg, oPreviewTitle, oPreviewMeta);
  if (undefined === getItemData(oListBox))
  {
    var packedID = getListboxSelectedValue(oListBox);
    requestThumbnailSrc(packedID, id);
  }
}

function setPreviewData(oListBox, oPreviewImg, oPreviewTitle, oPreviewMeta)
{
  var data = getItemData(oListBox);

  var src = "";
  var title = "";
  var user_link = "";
  var user_name = ""
  var artists = null;
  var categories = null;
  var themes = null;
  var tags = null;
  var meta = "";
  
  if (data)
  {
    if (data['src']) src = data['src'];
    if (data['title']) title = data['title'];
    if (data['user_link']) user_link = data['user_link'];
    if (data['user_name']) user_name = data['user_name'];
    if (data['artists']) artists = data['artists'];
    if (data['categories']) categories = data['categories'];
    if (data['themes']) themes = data['themes'];
    if (data['tags']) tags = data['tags'];
  }

    
  // for blogs 
  if (user_link && user_name)
    title = '<a href="' + user_link + '">' + title + '<br/><b>(user: ' + user_name + ')</b></a>'
  
  if(artists)
      meta = '<div><b>Artists</b></div><div>'+ artists + '</div>';
  if(categories)
      meta += '<div><b>Categories</b></div><div>' + categories + '</div>';
  if(themes)
      meta += '<div><b>Themes</b></div><div>'+themes+'</div>';
  if(tags)
      meta += '<div><b>Tags</b></div><div>' + tags + '</div>';

  if (oPreviewImg)
    oPreviewImg.src = src;
  if (oPreviewTitle)
    oPreviewTitle.update(title);
  if(oPreviewMeta)
    oPreviewMeta.update(meta);
}

/**
  @return  null if nothing selected in lisbox
                      undefined - if data does not exist in hash
                      object - if data exists in hash.
*/
function getItemData(oListBox)
{
  var data = null;
  var option = getListboxSelected(oListBox);
  if (option)
  {
    var itemID = option.value;
    data = featuredData["items"][itemID];
  }
  return data;
}

function putItemData(packedItemID, hashData)
{
  if (!featuredData["items"][packedItemID])
  {
    featuredData["items"][packedItemID] = {}
  }
  featuredData["items"][packedItemID] = hashData;
}



var requestedIDs = new Hash();
function addRequestID(id)
{
  var exists = requestedIDs.get(id) !== undefined;
  requestedIDs.set(id, true);
  return !exists;
}
function removeRequestedID(id)
{
  requestedIDs.unset(id);
}

function isExploreSection(listboxID)
{
  return EXPLORE_IDS.any(function(id) {return id == listboxID});
}

function isDiscoverSection(listboxID)
{
  return DISCOVER_IDS.any(function(id) {return id == listboxID});
}

function isPostsSection(listboxID)
{
  return POSTS_IDS.any(function(id) {return id == listboxID});
}


// Listbox processing
function updateCount(oListBox)
{
  var id = oListBox.id;

  id = id.replace("featured", "count");
  var oCount = $(id);
  if (oCount)
    oCount.update(oListBox.length);
}
function addOption(oListbox, text, value, isDefaultSelected, isSelected)
{
  var oOption = document.createElement("option");
  oOption.appendChild(document.createTextNode(text));
  oOption.setAttribute("value", value);

  if (isDefaultSelected) oOption.defaultSelected = true;
  else if (isSelected) oOption.selected = true;

  oListbox.appendChild(oOption);
  updateCount(oListbox);
}

function valueExists(oListbox, value)
{
  var returnValue = false;
  for (var i=0; i < oListbox.options.length; i++)
  {
    if (oListbox.options[i].value == value)
    {
      returnValue = true;
      break;
    }
  }
  return returnValue;
}

function shiftUpOption(oListbox, iIndex)
{
  if (iIndex > 0) 
  {
    var oOption = oListbox.options[iIndex];
    var oPrevOption = oListbox.options[iIndex - 1];
    oListbox.insertBefore(oOption, oPrevOption);
  }
}

function shiftDownOption(oListbox, iIndex)
{
  if (iIndex < oListbox.options.length - 1)
  {
    var oOption = oListbox.options[iIndex];
    var oNextOption = oListbox.options[iIndex + 1];
    oListbox.insertBefore(oNextOption, oOption);
  }
}

function changeSelection(oListBox, selectedIndex)
{
  oListBox.selectedIndex = Math.min(selectedIndex, oListBox.length - 1);
  oListBox.onchange();
}

function clearRelatedSelection(oListBox)
{
  oListBox = $(oListBox)
  if (isExploreSection(oListBox.id) || isPostsSection(oListBox.id))
  {
    var oRelatedListbox = $(hRelatedListboxes[oListBox.id])
    oRelatedListbox.selectedIndex = -1
  }
}


function getListboxSelected(oListBox)
{
  var option = null;
  if (oListBox.selectedIndex != -1)
    option = oListBox.options[oListBox.selectedIndex];
  return option;
}
function getListboxSelectedValue(oListBox)
{
  var value = null;
  var option = getListboxSelected(oListBox);
  if (option)
    value = option.value;
  return value;
}
// End Listbox processing

// Content Type processing
function getItemTypeByFilterType(filterType)
{
  filterTypes = {'images':'Image', 'videos':'Video', 'audios':'AudioFile', 'texts': 'TextFile'};
  var item_type;
  if (filterType == 'all')
  {
    oListBox = $('discover_all_subtype');
    item_type = getListboxSelectedValue(oListBox);
  }
  else 
    item_type = filterTypes[filterType];

  return item_type;
}

// End Content Type processing

/****************************************************************/
/*  original filename application.js                        */
/****************************************************************/


Event.observe(window, 'load', function() {
    Nifty("#user_bar", "big bottom");
    Nifty("div.round_medium");
    Nifty("div.tight_window");
});

var wizard = {
    toggle_add_to_my_portfolio: function (my_name){
        if(!$('artist_names'))
            return;
        var values = $F('artist_names').split(',').map(function(s) {
            return s.strip();
        });
        if($('collection_type_portfolio').checked){
            values = [my_name].concat(values).uniq();
        }else {
            values = values.reject(function(s) {
                return s== my_name;
            });
        }
        $('artist_names').value = values.join(',');
    }
};

/* fingertips */
Event.observe(window, 'load', function() {
    var preloaded_images = $A(['lightbox-close.png',
        'lightbox-corners-dark.png',
        'lightbox-corners-red.png',
        'lightbox-corners-white.png',
        'lightbox-left_right-dark.png',
        'lightbox-left_right-red.png',
        'lightbox-left_right-white.png',
        'lightbox-top_bottom-dark.png',
        'lightbox-top_bottom-red.png',
        'lightbox-top_bottom-white.png',
        'play.png',
        'play_pause.png'
        ]).collect(function(item) {
        var image = new Image();
        image.src = '/images/' + item;  // TODO change path
        return image;
    });
});

function detectMacXFF2() {
    var userAgent = navigator.userAgent.toLowerCase();
    if (/firefox[\/\s](\d+\.\d+)/.test(userAgent)) {
        var ffversion = new Number(RegExp.$1);
        if (ffversion < 3 && userAgent.indexOf('mac') != -1) {
            return true;
        } else {
            return false;
        }
    }
}

function detectIE6() {
    temp=navigator.appVersion.split('MSIE');

    // Parse the string for the "6" in 6.0
    ieVer=parseInt(temp[1]);

    // Is it greater than 6?
    return (ieVer == 6)
}

// This initializes Lightboxes
// You can use parent_element (=document by default) to search only in specified element
//
// Be careful. It may be invoked several times!!!
function initialize_lb(parent_element) {
    if (typeof parent_element == 'undefined') parent_element = document;

    Element.select(parent_element, '.lightbox').each(function(element) {
        var opts = element.attributes.rel.value.evalJSON();
        if (opts.ajax) opts = opts.ajax;

        var lightbox_url = '/lightbox/show?atom_id=' + opts.item_id +
        '&atom_type=' + opts.item_type;

        /* #208. In firefox 2 and IE6, when activating a youtube video, there is a white box appearing intermittantly within the viewer.
      Couldn't find the solution, so instead of lightbox on this browsers user will be redirected to 'view detail' page directly
      in a new window.
    */
        if( element.type == "video" && (detectMacXFF2() || detectIE6()) ) {
            element.href = lightbox_url + '&redirect_to_details=true';
            element.target = "_blank";
            return false;
        }
        new LightBox(element, {
            url: lightbox_url,
            afterOpen: function() {
                // workaround for IE by Ticket #750,
                // could not be solved via CSS in IE
                if (Prototype.Browser.IE)
                    rollover_accurate_hideAll();
            }
        });
        element.removeClassName("lightbox");
    });
}

function initialize_wizard_links() {
    $$('.wizard_link').each(function(element) {
        new LightBox(element, {
            url:element.rel
        });
        element.removeClassName("wizard_link");
    });
}


// Ticket #739 Switched from document.dom:loaded to window.load
//             due to IE7 bugs here
// This approach produces later initialization of lightboxes and rollovers
Element.observe(window, "load", function() {
    initialize_lb();
    initialize_tips();
});


Event.observe(window, 'load', function() {
    $$('.wizard_link','.header_wizard_link').each(function(element) {
        new LightBox(element,{
            url:element.rel
        });
    });
});


function show_artist() {
    var element = $$("#artist_name_auto_complete .selected").first();
    if(element) {
        location.href=element.getAttribute("url");
    }
}

/* fade flashes automatically */
Event.observe(window, 'load', fade_flashes);

/* can be called separately from window:load, for ex. to hide flash[:notice] in lightboxes */
function fade_flashes() {
    $$('.notice').invoke('fade', {
        duration: 8.0
    });
}


// patch Autocompleter with more sensible behaviour
Autocompleter.Base.addMethods({
    markPrevious: function() {
        if(this.index > 0)
            this.index--;
        else
            this.index = this.entryCount-1;
    },

    markNext: function() {
        if(this.index < this.entryCount-1)
            this.index++;
        else
            this.index = 0;
    },

    onBlur: function(event){ }
});

function apply_defaults_to_fields(obj){
    var me=$H(obj);

    var empty_or_equal=function(e,v){
        return (e.value.blank()||(v&&e.value==v));
    };
    var clear_if_empty=function(e,v){
        if(empty_or_equal(e,v))e.value="";
    };
    var default_value=function(e,v){
        if(e.value.blank())e.value=v;
    };

    me.each(function(i){
        var e=$(i.key);

        default_value(e,i.value);
        e.observe('blur',function(evt){
            default_value(e,i.value);
        });
        e.observe('focus',function(evt){
            clear_if_empty(e,i.value);
        });
    });

    return function(reset){
        return reset?apply_defaults_to_fields(obj):me.each(function(i){
            clear_if_empty($(i.key),i.value)
        });
    };
}

function refreshFolderBlock(type) {
    // If "Save to my portfolio" toggled, show select folder name box
    if ($(type+'_folder_list').show_or_hide($('collection_type_'+type).checked)) {
        // Enable select box with folder names, so that we send it's value to Rails
        $(type+'_collection_name').enable();
        // If "New..." was selected in folder name box, show text input for name
        $(type+'_new_folder').show_or_hide($(type+'_collection_name').value == '-1');
    } else {
        // Disablee select box with folder names, so that we don't send it's value to Rails
        // that way we don't add item to collection, if checkbox is not set
        $(type+'_collection_name').disable();
    }
}

function resetDefaultValue(element) {
    element = $(element);
    if(!element.reset_value_cleared) {
        element.reset_value_cleared = true;
        element.clear();
        element.removeClassName("default-input-value");
    }
}

function clearCheckboxesIn(scope) {

    input_text_id = {
        '.wizard-categories' : 'classification_names',
        '.wizard-themes'     : 'atom_tag_names'
    }

    $$(scope).each(function(el) {
        el.select('input[type=checkbox]').each(function(checkbox) {
            checkbox.checked = false;
        })
    })

    if($(input_text_id[scope])) {
        $(input_text_id[scope]).value = ''
    }

}

// returns true if count of connections does not exceed limit. Ticket #8
function validateMediaConnectionsCount()
{
    var maxCount = 8;
    var categoriesCount = getCheckedMediaCount('.wizard-categories');
    var themesCount = getCheckedMediaCount('.wizard-themes');

    var bExceed = (categoriesCount > maxCount) || (themesCount > maxCount)
    if (bExceed)
        connectionsLimitExceededAlert(maxCount);
    return !bExceed;
}

// returns true if count of connections does not exceed limit.
function getCheckedMediaCount(scope)
{
    var checkedBoxes = [];
    $$(scope).each(function(el) {
        el.select('input[type=checkbox]').each(function(checkbox) {
            if (checkbox.checked)
                checkedBoxes[checkedBoxes.length] = checkbox
        })
    });

    return checkedBoxes.length;
}

function validateConnectionsCount(options)
{
    var maxCount = 8;
    var bExceed = false;
    if (options) {
        var connection_type = options.connection_type;
        var tab_item_name = options.tab_item_name;
        if ('artist' == connection_type &&
            ('categorie' == tab_item_name || 'theme' == tab_item_name)) {
            var containerID = connection_type + '_' + tab_item_name;
            var count = getSelectedCount(containerID);
            bExceed = (count >= maxCount)
        }
    }
    if (bExceed)
        connectionsLimitExceededAlert(maxCount);
    return !bExceed;
}

function getSelectedCount(parentID)
{
    var selected = [];
    var parent = $(parentID);
    if (parent) {
        selected = parent.select('.categorie-item-selected')
    }
    return selected.length;
}

function connectionsLimitExceededAlert(maxCount)
{
    alert('No more then ' + maxCount + ' categories and ' + maxCount + ' themes can be selected')
}

function refreshTextAreaHeight(element)
{
    if ( element == null ) {
        return false;
    }

    // remember initial amount of rows
    if (element.initialRows == null) {
        element.initialRows = element.rows
    }

    var linesArray = element.value.match(/[\n\r]/g);
    var lines = ( linesArray == null ? 0 : linesArray.length);
    var extraRows = Math.round( element.value.length / element.cols );
    var newRows = lines + extraRows;
    if ( newRows != element.rows && newRows > element.initialRows)  {
        element.rows=newRows;
    }
}

function show_and_hide(dom_to_show, dom_to_hide) {
    $(dom_to_show).show();
    $(dom_to_hide).hide();
    return false;
}

/**
 * Gets selected radiobutton value
 * @radioClass - class of radio input element
 *
 * @returns - value of a checked radiobutton
 **/
function getSelectedRadioValue(radioClass, default_value)
{
    var value = default_value;
    var radios = $$('input.' + radioClass);
    radios.each(
        function(elem)
        {
            if (elem.checked)
                value = elem.value;
        }

        )

    return value;
}



// TRUNCATE via JS according to DOM layout
// Input:   element, maxHeight and String ellipsis = '...'
// Returns: [nothing] modifies input element

// WARNING! can be used ONLY on plain text element (for ex., div) - NO internal elements are allowed
// Long texts produce high CPU times - be sure to use as minimal source as poosible

function domTextTruncate(element, maxHeight, ellipsis) {
    if (element.getHeight() <= maxHeight) return;

    // protection from inner elements
    if (element.descendants().size() > 0) return;

    // Set ellipsis to defaults if not defined
    if (typeof ellipsis == 'undefined') ellipsis = '...';

    // Additional text variable's introduced to prevent ellipsis to be carried to the next line
    // after height calculations and brake layout in this case
    var text = element.innerHTML;
    while (element.getHeight() > maxHeight && !text.empty()) {
        text = text.replace(/\s?\S*$/, '').strip();
        element.innerHTML = text + ellipsis;
    }

    // patch when we should remove whole text to fit into maxHeight
    if (text.empty()) element.innerHTML = '';
}


// Function to extend Element.up() functionality to help find attributes
// See application.html view for example
// Input:
//   element   - is a start element to find attribute value
//   attribute - (default: rel) attribute to find
//   cssRule   - (default: a[attribute]) rule, that describes elements, see Element.up() for details
// Returns: String value of found attribute or empty string

function attributeFindUp(element, attribute, cssRule) {
    // Set attribute to 'rel' by default
    if (typeof attribute == 'undefined') attribute = 'rel';

    // Set cssRule to 'a[attribute]' by default
    if (typeof cssRule == 'undefined') cssRule = 'a[' + attribute + ']'
    else                               cssRule = cssRule + '[' + attribute + ']';


    var value = "";

    if (element) {
        if (element.getAttribute(attribute))
            value = element.getAttribute(attribute);
        else if (element.up(cssRule) && element.up(cssRule).getAttribute(attribute))
            value = element.up(cssRule).getAttribute(attribute);
    }

    return value;
}

function reset_forms() {
    $A(document.forms).each(function(f){
        f.reset()
    })
}
// This is for left panel category show and and hide

function toggle_sub_leaf(x) {
    if (document.getElementById(x).style.display == 'none') {
        document.getElementById(x).style.display = '';
    } else {
        document.getElementById(x).style.display = 'none';
    }
    return x
}


// For catch the class of any html tag

function getElementsByClass( searchClass, domNode, tagName) {
    if (domNode == null) domNode = document;
    if (tagName == null) tagName = '*';
    var el = new Array();
    var tags = domNode.getElementsByTagName(tagName);
    var tcl = " "+searchClass+" ";
    for(i=0,j=0; i<tags.length; i++) {
        var test = " " + tags[i].className + " ";
        if (test.indexOf(tcl) != -1)
            el[j++] = tags[i];
    }
    return el;
}

//This is for hide the root elements and its leaf elements

function hideleaf()
{
    // hide every element with class 'tab'
    var tabs = getElementsByClass('rootleaf');
    for(i=0; i<tabs.length; i++)
        tabs[i].style.display = 'none';
    hidesubleaf();

}
// This is only for hide the leaf alements
function hidesubleaf(){
    var tabs = getElementsByClass('subleaf');
    for(i=0; i<tabs.length; i++)
        tabs[i].style.display = 'none';
}

function more_current_events(){
    document.getElementById('one_current_event').style.display = 'none';
    document.getElementById('more_current_events').style.display = '';
}

function more_venues(){
    document.getElementById('show_less').style.display = 'none';
    document.getElementById('show_more').style.display = '';
}
function less_venues(){
    document.getElementById('show_more').style.display = 'none';
    document.getElementById('show_less').style.display = '';
}

// This function is for add venue page category choose
function update_admission(){
    if($('venue_category').value == 'Museum')
    {
        $('admission_id').show();
    }
    else
    {
        $('admission_id').hide();
    }

}

function back_media(){
    history.back(-1)
}
/****************************************************************/
/*  original filename classification.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
var classification = {
  // customize this for differnt effects
  toggle_with_effect: function(sub_menu){
    Effect.toggle(sub_menu, 'blind');
  },

  load: function(id){
    if(this.sub_menu_for(id) == undefined){
      new Ajax.Request('/disciplines/'+ id + '/expand', {asynchronous:true, evalScripts:true});
    } else {
      this.toggle(id);
    }
  },

  toggle: function(id){
    this.switch_icons(id);
    this.toggle_with_effect(this.sub_menu_for(id));
  },

  switch_icons: function(id){
    var toggler = $$('#classification-'+ id + '-menu-item > a:first-of-type').first();
    if(toggler.down('img.expand_icon') == undefined){
      toggler.innerHTML = toggler.innerHTML.gsub(/collapse/, 'expand');
    } else {
      toggler.innerHTML = toggler.innerHTML.gsub(/expand/, 'collapse');
    }
  },

  sub_menu_for: function(id){
    return $$("#classification-" + id + "-menu-item ul:first-of-type").first();
  },

  // always goes out via xhr
  expand_all: function(){
    // new Ajax.Request('/disciplines/expand_all', {asynchronous:true, evalScripts:true});
  },

  collapse_all: function(){
    var count = 0;
    $$('#menu_left a img.collapse_icon').reverse().each(function(collapse_icon){
        count += 1;
        // delay long enough for the blind effect to comple
        collapse_icon.up().onclick.delay(count * 1.05);
      });
  }
}

/****************************************************************/
/*  original filename comments.js                        */
/****************************************************************/


function toggle_reply_comment(parent_comment_id)
{
  var box = $('reply_'+parent_comment_id);
  if(box.style.display == 'none') {
    new Effect.Appear(box,{durartion: 0.1});
    box.style.display = "block";      
    $('comment_comment_'+parent_comment_id).focus();
  } else {
    new Effect.Fade(box,{durartion: 0.1});
    //box.style.display = 'none';
  }
  return false;
}

// can't really validate comment in the current setting yet...
function validate_comment(form) {
 if(form.elements[0].value == "") {
   alert("comment can't be empty");
   return false;
 } else {
   form.submit();
   return true;
 }
}

function toggle_child_comment(parent_comment_id, el)
{
  var show_el = $("show_child_comments_"+parent_comment_id);
  var hide_el = $("hide_child_comments_"+parent_comment_id);
   if(el.innerHTML == "Show")
   {
     el.innerHTML = "Hide";
     //show_el.show();
     new Effect.Appear(show_el);
     //hide_el.hide();
     new Effect.Fade(hide_el);       
   } else {
     el.innerHTML = "Show";
     //show_el.hide();
     new Effect.Fade(show_el);
     //hide_el.show();       
     new Effect.Appear(hide_el);  
   }
   return false;

}

/****************************************************************/
/*  original filename niftycube.js                        */
/****************************************************************/


/* Nifty Corners Cube - rounded corners with CSS and Javascript
Copyright 2006 Alessandro Fulciniti (a.fulciniti@html.it)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

var niftyOk=(document.getElementById && document.createElement && Array.prototype.push);
var niftyCss=false;

String.prototype.find=function(what){
return(this.indexOf(what)>=0 ? true : false);
}

var oldonload=window.onload;
if(typeof(NiftyLoad)!='function') NiftyLoad=function(){};
if(typeof(oldonload)=='function')
    window.onload=function(){oldonload();AddCss();NiftyLoad()};
else window.onload=function(){AddCss();NiftyLoad()};

function AddCss(){
niftyCss=true;
// zs: commented out on purpuse, this file is already loaded once.
// var l=CreateEl("link");
// l.setAttribute("type","text/css");
// l.setAttribute("rel","stylesheet");
// l.setAttribute("href","/stylesheets/nifty/corners.css");
// l.setAttribute("media","screen");
// document.getElementsByTagName("head")[0].appendChild(l);
}

function Nifty(selector,options){
if(niftyOk==false) return;
if(niftyCss==false) AddCss();
var i,v=selector.split(","),h=0;
if(options==null) options="";
if(options.find("fixed-height"))
    h=getElementsBySelector(v[0])[0].offsetHeight;
for(i=0;i<v.length;i++)
    Rounded(v[i],options);
if(options.find("height")) SameHeight(selector,h);
}

function Rounded(selector,options){
var i,top="",bottom="",v=new Array();
if(options!=""){
    options=options.replace("left","tl bl");
    options=options.replace("right","tr br");
    options=options.replace("top","tr tl");
    options=options.replace("bottom","br bl");
    options=options.replace("transparent","alias");
    if(options.find("tl")){
        top="both";
        if(!options.find("tr")) top="left";
        }
    else if(options.find("tr")) top="right";
    if(options.find("bl")){
        bottom="both";
        if(!options.find("br")) bottom="left";
        }
    else if(options.find("br")) bottom="right";
    }
if(top=="" && bottom=="" && !options.find("none")){top="both";bottom="both";}
v=getElementsBySelector(selector);
for(i=0;i<v.length;i++){
    FixIE(v[i]);
    if(top!="") AddTop(v[i],top,options);
    if(bottom!="") AddBottom(v[i],bottom,options);
    }
}

function AddTop(el,side,options){
var d=CreateEl("b"),lim=4,border="",p,i,btype="r",bk,color;
d.style.marginLeft="-"+getPadding(el,"Left")+"px";
d.style.marginRight="-"+getPadding(el,"Right")+"px";
if(options.find("alias") || (color=getBk(el))=="transparent"){
    color="transparent";bk="transparent"; border=getParentBk(el);btype="t";
    }
else{
    bk=getParentBk(el); border=Mix(color,bk);
    }
d.style.background=bk;
d.className="niftycorners";
p=getPadding(el,"Top");
if(options.find("small")){
    d.style.marginBottom=(p-2)+"px";
    btype+="s"; lim=2;
    }
else if(options.find("big")){
    d.style.marginBottom=(p-10)+"px";
    btype+="b"; lim=8;
    }
else d.style.marginBottom=(p-5)+"px";
for(i=1;i<=lim;i++)
    d.appendChild(CreateStrip(i,side,color,border,btype));
el.style.paddingTop="0";
el.insertBefore(d,el.firstChild);
}

function AddBottom(el,side,options){
var d=CreateEl("b"),lim=4,border="",p,i,btype="r",bk,color;
d.style.marginLeft="-"+getPadding(el,"Left")+"px";
d.style.marginRight="-"+getPadding(el,"Right")+"px";
if(options.find("alias") || (color=getBk(el))=="transparent"){
    color="transparent";bk="transparent"; border=getParentBk(el);btype="t";
    }
else{
    bk=getParentBk(el); border=Mix(color,bk);
    }
d.style.background=bk;
d.className="niftycorners";
p=getPadding(el,"Bottom");
if(options.find("small")){
    d.style.marginTop=(p-2)+"px";
    btype+="s"; lim=2;
    }
else if(options.find("big")){
    d.style.marginTop=(p-10)+"px";
    btype+="b"; lim=8;
    }
else d.style.marginTop=(p-5)+"px";
for(i=lim;i>0;i--)
    d.appendChild(CreateStrip(i,side,color,border,btype));
el.style.paddingBottom=0;
el.appendChild(d);
}

function CreateStrip(index,side,color,border,btype){
var x=CreateEl("b");
x.className=btype+index;
x.style.backgroundColor=color;
x.style.borderColor=border;
if(side=="left"){
    x.style.borderRightWidth="0";
    x.style.marginRight="0";
    }
else if(side=="right"){
    x.style.borderLeftWidth="0";
    x.style.marginLeft="0";
    }
return(x);
}

function CreateEl(x){
return(document.createElement(x));
}

function FixIE(el){
if(el.currentStyle!=null && el.currentStyle.hasLayout!=null && el.currentStyle.hasLayout==false)
    el.style.display="inline-block";
}

function SameHeight(selector,maxh){
var i,v=selector.split(","),t,j,els=[],gap;
for(i=0;i<v.length;i++){
    t=getElementsBySelector(v[i]);
    els=els.concat(t);
    }
for(i=0;i<els.length;i++){
    if(els[i].offsetHeight>maxh) maxh=els[i].offsetHeight;
    els[i].style.height="auto";
    }
for(i=0;i<els.length;i++){
    gap=maxh-els[i].offsetHeight;
    if(gap>0){
        t=CreateEl("b");t.className="niftyfill";t.style.height=gap+"px";
        nc=els[i].lastChild;
        if(nc.className=="niftycorners")
            els[i].insertBefore(t,nc);
        else els[i].appendChild(t);
        }
    }
}

function getElementsBySelector(selector){
  return $$(selector);
}

function getParentBk(x){
var el=x.parentNode,c;
while(el.tagName.toUpperCase()!="HTML" && (c=getBk(el))=="transparent")
    el=el.parentNode;
if(c=="transparent") c="#FFFFFF";
return(c);
}

function getBk(x){
var c=getStyleProp(x,"backgroundColor");
if(c==null || c=="transparent" || c.find("rgba(0, 0, 0, 0)"))
    return("transparent");
if(c.find("rgb")) c=rgb2hex(c);
return(c);
}

function getPadding(x,side){
var p=getStyleProp(x,"padding"+side);
if(p==null || !p.find("px")) return(0);
return(parseInt(p));
}

function getStyleProp(x,prop){
if(x.currentStyle)
    return(x.currentStyle[prop]);
if(document.defaultView.getComputedStyle)
    return(document.defaultView.getComputedStyle(x,'')[prop]);
return(null);
}

function rgb2hex(value){
var hex="",v,h,i;
var regexp=/([0-9]+)[, ]+([0-9]+)[, ]+([0-9]+)/;
var h=regexp.exec(value);
for(i=1;i<4;i++){
    v=parseInt(h[i]).toString(16);
    if(v.length==1) hex+="0"+v;
    else hex+=v;
    }
return("#"+hex);
}

function Mix(c1,c2){
var i,step1,step2,x,y,r=new Array(3);
if(c1.length==4)step1=1;
else step1=2;
if(c2.length==4) step2=1;
else step2=2;
for(i=0;i<3;i++){
    x=parseInt(c1.substr(1+step1*i,step1),16);
    if(step1==1) x=16*x+x;
    y=parseInt(c2.substr(1+step2*i,step2),16);
    if(step2==1) y=16*y+y;
    r[i]=Math.floor((x*50+y*50)/100);
    r[i]=r[i].toString(16);
    if(r[i].length==1) r[i]="0"+r[i];
    }
return("#"+r[0]+r[1]+r[2]);
}

/****************************************************************/
/*  original filename scrollable.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
var Scrollable = Class.create();
Scrollable.prototype = {
  initialize: function(container, options){
    this.options = $H(options);
    this.container = $(container);
    this.view_port = this.container.down('.view_port');
    this.scrolled_container = this.view_port.down('.sets');
    this.slided_elements = this.view_port.select('ul');
    if(this.slided_elements.size() == 0)
      return;
    this.tabbed_window = $(this.options.get('tabbed_window'));
    this.setup_page_links();
  },

  add_navigation_controlls: function(){

var options = {};
    options.bottom = "<ul class='pod_pagination'>" + "<li><a href='#'>&nbsp;</a></li>".times(this.slided_elements.size()) + "</ul>";
    if(this.options.get('no_arrows') != true){
      options.after = "<div class='scrollers'><a class='prev' href='#'>&nbsp;</a><a class='next' href='#'>&nbsp;</a></div>";
    }
    this.container.down('.scroll-content').insert(options);
  },

  setup_page_links: function(){

var page_bak = new Array();
var page_bak_val = new Array();
    if (this.options.get('no_page')=="con-pod"){
        page_bak = document.cookie.split(';');
        page_bak_val = page_bak[0].split('=');
        this.active = page_bak_val[1];
        document.cookie="zone_ids=0";
       //var r=document.cookie;
    }else{
        this.active = 0;
    }


    this.add_navigation_controlls();
    this.paginator = this.container.down('.pod_pagination');
    this.pagination = this.container.select('.pod_pagination a');
   // this.active = 0;
    this.pagination[this.active].addClassName('active');
    this.pagination_centered = false;
    this.center_pagination();
    if (this.tabbed_window != null) {
      this.tabbed_window.observe('tab:switched', this.center_pagination.bindAsEventListener(this));
    }
    this.pagination.each(function(link, index){
        link.observe('click', function(e) {
            this.page(e, index);
          }.bindAsEventListener(this));
      }.bind(this));
    if(this.container.down('.scrollers')){
      this.container.down('.scrollers a.next').observe('click', this.next.bindAsEventListener(this));
      this.container.down('.scrollers a.prev').observe('click', this.previous.bindAsEventListener(this));
    }
    this.update_links_activeness();
  },

  update_links_activeness: function(){
    bPrevEnabled = this.active != 0;
    bNextEnabled = this.active != this.pagination.length-1;
    s = 'disabled_scroll';
    if(this.container.down('.scrollers')){
      prev = this.container.down('.scrollers a.prev');
      next = this.container.down('.scrollers a.next');
      if (bPrevEnabled == prev.hasClassName(s)) prev.toggleClassName(s);
      if (bNextEnabled == next.hasClassName(s)) next.toggleClassName(s);
    }
  },

  page: function(event, index){
    if (this.options.get('no_page')=="con-pod"){
      document.cookie="zone_ids=" + index;
    }
   event.stop();
    this.slide_to(this.slided_elements[index]);
    this.pagination[this.active].removeClassName('active');
    this.active = index;
    this.pagination[this.active].addClassName('active');
    this.update_links_activeness();
  },

  next: function(event){
    event.stop();
    if(this.active == this.pagination.length-1)
      return;
    this.slide_to(this.slided_elements[this.active + 1]);
    this.pagination[this.active].removeClassName('active');
    this.active += 1;
    this.pagination[this.active].addClassName('active');
    this.update_links_activeness();
  },

  previous: function(event){
    event.stop();
    if(this.active == 0)
      return;
    this.slide_to(this.slided_elements[this.active - 1]);
    this.pagination[this.active].removeClassName('active');
    this.active -= 1;
    this.pagination[this.active].addClassName('active');
    this.update_links_activeness();
  },

  center_pagination: function(){
    var paginator_width = this.paginator.offsetWidth - 2;
    if(paginator_width < 0 || this.pagination_centered)
      return;  // we are invisible on some tab, or we have already centered
    this.container.setStyle({position: 'relative'});
    this.paginator.setStyle({position: 'absolute'});
    paginator_width = this.paginator.offsetWidth - 2; // reload
    this.paginator.setStyle({ left: (((this.container.offsetWidth / 2) - (paginator_width / 2)) + 'px') });
    if(this.options.get('pager_on') == 'top') {
      this.paginator.setStyle({ top: '13px' });
    } else {
      this.paginator.up().setStyle({paddingBottom : '7px'});
    }
    this.pagination_centered = true;
  },

  slide_to: function(element){
    var parent = this.view_port.cumulativeOffset();
    var target = element.cumulativeOffset();
    new Effect.Tween(this.view_port,
                     this.view_port.scrollLeft,
                     target.left - parent.left,
                     { fps: 100, duration: 0.6 },
                     'scrollLeft');
  }
};
/****************************************************************/
/*  original filename swfobject.js                        */
/****************************************************************/


/**
 * SWFObject v1.5.1: Flash Player detection and embed - http://blog.deconcept.com/swfobject/
 *
 * SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 *
 */
if(typeof deconcept == "undefined") var deconcept = {};
if(typeof deconcept.util == "undefined") deconcept.util = {};
if(typeof deconcept.SWFObjectUtil == "undefined") deconcept.SWFObjectUtil = {};
deconcept.SWFObject = function(swf, id, w, h, ver, c, quality, xiRedirectUrl, redirectUrl, detectKey) {
    if (!document.getElementById) { return; }
    this.DETECT_KEY = detectKey ? detectKey : 'detectflash';
    this.skipDetect = deconcept.util.getRequestParameter(this.DETECT_KEY);
    this.params = {};
    this.variables = {};
    this.attributes = [];
    if(swf) { this.setAttribute('swf', swf); }
    if(id) { this.setAttribute('id', id); }
    if(w) { this.setAttribute('width', w); }
    if(h) { this.setAttribute('height', h); }
    if(ver) { this.setAttribute('version', new deconcept.PlayerVersion(ver.toString().split("."))); }
    this.installedVer = deconcept.SWFObjectUtil.getPlayerVersion();
    if (!window.opera && document.all && this.installedVer.major > 7) {
        // only add the onunload cleanup if the Flash Player version supports External Interface and we are in IE
        // fixes bug in some fp9 versions see http://blog.deconcept.com/2006/07/28/swfobject-143-released/
        if (!deconcept.unloadSet) {
            deconcept.SWFObjectUtil.prepUnload = function() {
                __flash_unloadHandler = function(){};
                __flash_savedUnloadHandler = function(){};
                window.attachEvent("onunload", deconcept.SWFObjectUtil.cleanupSWFs);
            };
            window.attachEvent("onbeforeunload", deconcept.SWFObjectUtil.prepUnload);
            deconcept.unloadSet = true;
        }
    }
    if(c) { this.addParam('bgcolor', c); }
    var q = quality ? quality : 'high';
    this.addParam('quality', q);
    this.setAttribute('useExpressInstall', false);
    this.setAttribute('doExpressInstall', false);
    var xir = (xiRedirectUrl) ? xiRedirectUrl : window.location;
    this.setAttribute('xiRedirectUrl', xir);
    this.setAttribute('redirectUrl', '');
    if(redirectUrl) { this.setAttribute('redirectUrl', redirectUrl); }
};
deconcept.SWFObject.prototype = {
    useExpressInstall: function(path) {
        this.xiSWFPath = !path ? "expressinstall.swf" : path;
        this.setAttribute('useExpressInstall', true);
    },
    setAttribute: function(name, value){
        this.attributes[name] = value;
    },
    getAttribute: function(name){
        return this.attributes[name] || "";
    },
    addParam: function(name, value){
        this.params[name] = value;
    },
    getParams: function(){
        return this.params;
    },
    addVariable: function(name, value){
        this.variables[name] = value;
    },
    getVariable: function(name){
        return this.variables[name] || "";
    },
    getVariables: function(){
        return this.variables;
    },
    getVariablePairs: function(){
        var variablePairs = [];
        var key;
        var variables = this.getVariables();
        for(key in variables){
            variablePairs[variablePairs.length] = key +"="+ variables[key];
        }
        return variablePairs;
    },
    getSWFHTML: function() {
        var swfNode = "";
        if (navigator.plugins && navigator.mimeTypes && navigator.mimeTypes.length) { // netscape plugin architecture
            if (this.getAttribute("doExpressInstall")) {
                this.addVariable("MMplayerType", "PlugIn");
                this.setAttribute('swf', this.xiSWFPath);
            }
            swfNode = '<embed type="application/x-shockwave-flash" src="'+ this.getAttribute('swf') +'" width="'+ this.getAttribute('width') +'" height="'+ this.getAttribute('height') +'" style="'+ (this.getAttribute('style') || "") +'"';
            swfNode += ' id="'+ this.getAttribute('id') +'" name="'+ this.getAttribute('id') +'" ';
            var params = this.getParams();
             for(var key in params){ swfNode += [key] +'="'+ params[key] +'" '; }
            var pairs = this.getVariablePairs().join("&");
             if (pairs.length > 0){ swfNode += 'flashvars="'+ pairs +'"'; }
            swfNode += '/>';
        } else { // PC IE
            if (this.getAttribute("doExpressInstall")) {
                this.addVariable("MMplayerType", "ActiveX");
                this.setAttribute('swf', this.xiSWFPath);
            }
            swfNode = '<object id="'+ this.getAttribute('id') +'" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="'+ this.getAttribute('width') +'" height="'+ this.getAttribute('height') +'" style="'+ (this.getAttribute('style') || "") +'">';
            swfNode += '<param name="movie" value="'+ this.getAttribute('swf') +'" />';
            var params = this.getParams();
            for(var key in params) {
             swfNode += '<param name="'+ key +'" value="'+ params[key] +'" />';
            }
            var pairs = this.getVariablePairs().join("&");
            if(pairs.length > 0) {swfNode += '<param name="flashvars" value="'+ pairs +'" />';}
            swfNode += "</object>";
        }
        return swfNode;
    },
    write: function(elementId){
        if(this.getAttribute('useExpressInstall')) {
            // check to see if we need to do an express install
            var expressInstallReqVer = new deconcept.PlayerVersion([6,0,65]);
            if (this.installedVer.versionIsValid(expressInstallReqVer) && !this.installedVer.versionIsValid(this.getAttribute('version'))) {
                this.setAttribute('doExpressInstall', true);
                this.addVariable("MMredirectURL", escape(this.getAttribute('xiRedirectUrl')));
                document.title = document.title.slice(0, 47) + " - Flash Player Installation";
                this.addVariable("MMdoctitle", document.title);
            }
        }
        if(this.skipDetect || this.getAttribute('doExpressInstall') || this.installedVer.versionIsValid(this.getAttribute('version'))){
            var n = (typeof elementId == 'string') ? document.getElementById(elementId) : elementId;
            n.innerHTML = this.getSWFHTML();
            return true;
        }else{
            if(this.getAttribute('redirectUrl') != "") {
                document.location.replace(this.getAttribute('redirectUrl'));
            }
        }
        return false;
    }
}

/* ---- detection functions ---- */
deconcept.SWFObjectUtil.getPlayerVersion = function(){
    var PlayerVersion = new deconcept.PlayerVersion([0,0,0]);
    if(navigator.plugins && navigator.mimeTypes.length){
        var x = navigator.plugins["Shockwave Flash"];
        if(x && x.description) {
            PlayerVersion = new deconcept.PlayerVersion(x.description.replace(/([a-zA-Z]|\s)+/, "").replace(/(\s+r|\s+b[0-9]+)/, ".").split("."));
        }
    }else if (navigator.userAgent && navigator.userAgent.indexOf("Windows CE") >= 0){ // if Windows CE
        var axo = 1;
        var counter = 3;
        while(axo) {
            try {
                counter++;
                axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash."+ counter);
//              document.write("player v: "+ counter);
                PlayerVersion = new deconcept.PlayerVersion([counter,0,0]);
            } catch (e) {
                axo = null;
            }
        }
    } else { // Win IE (non mobile)
        // do minor version lookup in IE, but avoid fp6 crashing issues
        // see http://blog.deconcept.com/2006/01/11/getvariable-setvariable-crash-internet-explorer-flash-6/
        try{
            var axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
        }catch(e){
            try {
                var axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
                PlayerVersion = new deconcept.PlayerVersion([6,0,21]);
                axo.AllowScriptAccess = "always"; // error if player version < 6.0.47 (thanks to Michael Williams @ Adobe for this code)
            } catch(e) {
                if (PlayerVersion.major == 6) {
                    return PlayerVersion;
                }
            }
            try {
                axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
            } catch(e) {}
        }
        if (axo != null) {
            PlayerVersion = new deconcept.PlayerVersion(axo.GetVariable("$version").split(" ")[1].split(","));
        }
    }
    return PlayerVersion;
};
deconcept.PlayerVersion = function(arrVersion){
    this.major = arrVersion[0] != null ? parseInt(arrVersion[0]) : 0;
    this.minor = arrVersion[1] != null ? parseInt(arrVersion[1]) : 0;
    this.rev = arrVersion[2] != null ? parseInt(arrVersion[2]) : 0;
};
deconcept.PlayerVersion.prototype.versionIsValid = function(fv){
    if(this.major < fv.major) return false;
    if(this.major > fv.major) return true;
    if(this.minor < fv.minor) return false;
    if(this.minor > fv.minor) return true;
    if(this.rev < fv.rev) return false;
    return true;
};
/* ---- get value of query string param ---- */
deconcept.util = {
    getRequestParameter: function(param) {
        var q = document.location.search || document.location.hash;
        if (param == null) { return q; }
        if(q) {
            var pairs = q.substring(1).split("&");
            for (var i=0; i < pairs.length; i++) {
                if (pairs[i].substring(0, pairs[i].indexOf("=")) == param) {
                    return pairs[i].substring((pairs[i].indexOf("=")+1));
                }
            }
        }
        return "";
    }
};
/* fix for video streaming bug */
deconcept.SWFObjectUtil.cleanupSWFs = function() {
    var objects = document.getElementsByTagName("OBJECT");
    for (var i = objects.length - 1; i >= 0; i--) {
        objects[i].style.display = 'none';
        for (var x in objects[i]) {
            if (typeof objects[i][x] == 'function') {
                objects[i][x] = function(){};
            }
        }
    }
};
/* add document.getElementById if needed (mobile IE < 5) */
 if (!document.getElementById && document.all) { document.getElementById = function(id) { return document.all[id]; };}

/* add some aliases for ease of use/backwards compatibility */
var getQueryParamValue = deconcept.util.getRequestParameter;
var FlashObject = deconcept.SWFObject; // for legacy support
var SWFObject = deconcept.SWFObject;


/****************************************************************/
/*  original filename tabbed_window.js                        */
/****************************************************************/


function TabbedWindow(element) {
    this.element = $(element);

    // this.num - number of current tabset starting from 0
    this.num = this.get_my_num(this.element.id);
    if (this.num == null)
        return;

    var my_tab = new RegExp('^tab_' + this.num + '_\\d+_content$');
    var buttons_ul = this.element.down("ul#tab_buttons_" + this.num);

    // this.current - ID of currently selected tab starting from 0
    try {
        this.current = this.extractTabNumber(buttons_ul.down("li.current a"));
    } catch(e){}
    finally {
        if (typeof this.current == 'undefined' || this.current == null)
            this.current = 0;
    }
  
    // hash of tab links: {'#tab_name'=> <a> DOM element, ... }
    this.hash_list = {};

    // <li> DOM objects of all tabs
    this.togglers = buttons_ul.select("li");
    this.togglers.each(function(e) {
        e.select("a").each(function(a) {
            if (typeof a.hash != 'undefined' && a.hash.length > 0)
                this.hash_list[a.hash] = a;
        }, this);
    }, this);

    this.togglers_length = this.togglers.length;

    // array of <DIV>s with id similar to 'tab_0_1_content' where 0 is tabset id and 1 is tab id
    this.tabs = this.element.down("div#tab_container_" + this.num).childElements().findAll(function(e){
        return e.id.match(my_tab);
    });

    this.tabs.invoke('hide');
    this.tabs.each(function(el){
        el.removeClassName('hidden_tab_container')
    })

    this.tabs[this.current].show();

    // update order and bind onClick listeners
    this.togglers.each(function(toggler, i) {
        toggler.setStyle({
            zIndex: (this.togglers_length - i)
        });
        if (i == (this.togglers_length - 1))
            toggler.addClassName('last');
        if (toggler.hasClassName('current'))
            toggler.setStyle({
                zIndex: (this.togglers_length + 1)
            });

        toggler.down('a').observe('click', this.onclick.bindAsEventListener(this));
    }, this);

    TabbedWindow.tab_list.push(this);
    TabbedWindow.tab_list[0].refreshExternalCaption();
}

// array of tabsets (TabbedWindow objects) on the page
TabbedWindow.tab_list = [];

// PUBLIC METHODS

// switch to tab of any order and any tabset by its hash

TabbedWindow.switch_tabs_by_hash = function(hash) {
    TabbedWindow.tab_list.find(function(t) {

        if (document.getElementById("connections")){
            if ('#Connections'==hash){
                //document.getElementById('link1').style='display:none';
                document.getElementById("connections").style.fontWeight = "bold";

            }else{

                document.getElementById("connections").style.fontWeight = "normal";
            }
        }
        if (document.getElementById("enjoyers")){
            if('#Enjoyers'==hash){

                //document.getElementById('link1').style='display:none';
                document.getElementById("enjoyers").style.fontWeight = "bold";

            }else{

                document.getElementById("enjoyers").style.fontWeight = "normal";
            }
        }
        if (document.getElementById("overview")){
            if('#Overview'==hash){

                //document.getElementById('link1').style='display:none';
                document.getElementById("overview").style.fontWeight = "bold";

            }
            else{

                document.getElementById("overview").style.fontWeight = "normal";
            }
        }
        if (document.getElementById("profile")){
            if('#Profile'==hash){

                //document.getElementById('link1').style='display:none';
                document.getElementById("profile").style.fontWeight = "bold";

            }
            else{

                document.getElementById("profile").style.fontWeight = "normal";
            }
        }
        if (document.getElementById("favorites")){
            if('#Favorites'==hash){

                //document.getElementById('link1').style='display:none';
                document.getElementById("favorites").style.fontWeight = "bold";

            }
            else{

                document.getElementById("favorites").style.fontWeight = "normal";
            }
        }
        if (document.getElementById("blog")){
            if('#Blog'==hash){

                //document.getElementById('link1').style='display:none';
                document.getElementById("blog").style.fontWeight = "bold";

            }
            else{

                document.getElementById("blog").style.fontWeight = "normal";
            }
        }
        if (document.getElementById("following")){

            if('#Following'==hash){

                //document.getElementById('link1').style='display:none';
                document.getElementById("following").style.fontWeight = "bold";
     

            }
            else{

                document.getElementById("following").style.fontWeight = "normal";
            }
        }
     
        if (document.getElementById("works")){

            if('#Works'==hash){

                //document.getElementById('link1').style='display:none';
                document.getElementById("works").style.fontWeight = "bold";


            }
            else{

                document.getElementById("works").style.fontWeight = "normal";
            }
        }
        if (document.getElementById("followers")){
            if ('#Followers'==hash){

            //document.getElementById('link1').style='display:none';
            document.getElementById("followers").style.fontWeight = "bold";

            }else{

            document.getElementById("followers").style.fontWeight = "normal";
            }
        }
        if (document.getElementById("collections")){

            if('#Collections'==hash){

                //document.getElementById('link1').style='display:none';
                document.getElementById("collections").style.fontWeight = "bold";


            }
            else{

                document.getElementById("collections").style.fontWeight = "normal";
            }
        }

       // if (document.getElementById("products")){

          //  if('#Products'==hash){

                //document.getElementById('link1').style='display:none';
               // document.getElementById("products").style.fontWeight = "bold";


           // }
           // else{

            //    document.getElementById("products").style.fontWeight = "normal";
           // }
       // }

        if (!t.hash_list[hash])
            return false;

        t.switch_tabs(t.hash_list[hash]);
        return true;
    });
};


TabbedWindow.prototype.is_ajax = function() {
    return this.element.readAttribute('ajax') == 'true';
}

// return text tab id uniquely identifying the tab (used in AJAX requests)
TabbedWindow.prototype.get_tab_id = function(tab_index) {
    return (this.tabs[tab_index].readAttribute('tab_id'));
};


// PRIVATE METHODS

// to_tab - <A> object of tab togglers
TabbedWindow.prototype.switch_tabs = function(to_tab) {
    var target_index = this.extractTabNumber(to_tab);
    if (this.current == target_index)
        return;

    this.load_tab_by_ajax(target_index);
  
    this.togglers[this.current].setStyle({
        zIndex: (this.togglers_length - this.current)
    });
    this.togglers[this.current].removeClassName('current');
    this.tabs[this.current].hide();

    var current_toggler = to_tab.up('li');
    current_toggler.addClassName('current');
    current_toggler.setStyle({
        zIndex: (this.togglers_length + 1)
    });
    this.tabs[target_index].show();

    this.current = target_index;
    this.fire_tab_switched.bind(this).defer();

    this.refreshExternalCaption();
};

// load tab with integer index idx by AJAX call if it was not loaded yet
TabbedWindow.prototype.load_tab_by_ajax = function(idx) {
    if (!this.is_ajax() || this.is_tab_loaded(idx))
        return;

    url = this.get_ajax_url();
    params = {
        clicked_from: this.get_tab_id(idx)
    };
    AjaxRequestWithSpinner(url, {
        parameters: params,
        onComplete: this.onAjaxComplete.bind(this, idx)
    },
    spinner ? spinner.spinner : '',
    spinner ? spinner.element : ''
    );
}

// not used now. Every tabset may have external caption where current tab name 
// will be placed and updated on every tab change. 
// It should have id = external-tab_0-caption for tabset 0
TabbedWindow.prototype.refreshExternalCaption = function() {
    if ($("external-tab_" + (this.num) + "-caption")) {
        $("external-tab_" + (this.num) + "-caption").innerHTML =
        $("tab_"+ (this.num) + "_" + (this.current + 1) + "_button").innerHTML;
    }
};

TabbedWindow.prototype.get_my_num = function(str) {
    var ret = str.match(/^tabbed_window_set_(\d+)$/);
    return ret ? ret[1] : null;
};

TabbedWindow.prototype.extractTabNumber = function(element) {
    return (parseInt(element.id.match(/^tab_\d+_(\d+)_.*$/)[1]) - 1);
};

TabbedWindow.prototype.fire_tab_switched = function() {
    $("tab_"+ (this.num) + '_' + (this.current + 1) + "_button").fire('tab:switched');
};

// is tab with specified idex loaded (for AJAX-type tabsets)
TabbedWindow.prototype.is_tab_loaded = function(tab_index) {
    return (this.tabs[tab_index].readAttribute('loaded') == 'true');
};

// set tab's 'loaded' value to true or false
TabbedWindow.prototype.set_tab_loaded = function(tab_index, value) {
    this.tabs[tab_index].writeAttribute('loaded', String(value));
};

TabbedWindow.prototype.get_ajax_url = function() {
    return this.element.readAttribute('ajax_url');
}

// EVENTS

TabbedWindow.prototype.onclick = function(event) {
    var source = Event.element(event);
    this.switch_tabs(source);
};

// AJAX request is complete. Mark tab as loaded.
TabbedWindow.prototype.onAjaxComplete = function(idx) {
    this.set_tab_loaded(idx, true);
}


// Tabs initializer. Should be called on load and to init tabs for HTML received by AJAX calls
function InitTabsOnPage() {
    TabbedWindow.tab_list = [];

    // init every tabset
    var tab_sets = $$("div").findAll(function(e){
        return e.id.match(/^tabbed_window_set_/);
    });
    if (tab_sets && tab_sets.length) {
        tab_sets.each(function(e){
            try {
                new TabbedWindow(e);
            } catch(e){}
        })
       
        // add open_tab parameter to hash and switch to that tab
        res = document.location.search.match(/open_tab=(.+?)([#&]|$)/)
        if (res && res.size() == 3)
            // [17-NOV-2009]The line bellow was throwing error while navigating through
            // products pages and also followers pages.we found the
            // variable "hash" was undefined, which was causing the error.
            // TODO: We need to check if removing the variable "hash" will cause
            // any further error or not.
            //   window.location.hash = "#"+hash + res[1].replace(/\+/g,' ')
            window.location.hash = "#"+ res[1].replace(/\+/g,' ');
        if (window.location.hash)
        
            TabbedWindow.switch_tabs_by_hash(window.location.hash);
    }

    // Hide tips when tab switching
    Event.observe(document, 'tab:switched', rollover_accurate_hideAll);
}

Event.observe(window, 'load', InitTabsOnPage);

/****************************************************************/
/*  original filename prototip.js                        */
/****************************************************************/


//  Prototip 2.0.5 - 28-10-2008
//  Copyright (c) 2008 Nick Stakenburg (http://www.nickstakenburg.com)
//
//  Licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License
//  http://creativecommons.org/licenses/by-nc-nd/3.0/

//  More information on this project:
//  http://www.nickstakenburg.com/projects/prototip2/

var Prototip = {
  Version: '2.0.5'
};

var Tips = {
  options: {
    images: '../images/prototip/', // image path, can be relative to this file or an absolute url
    zIndex: 6000                   // raise if required
  }
};

Prototip.Styles = {
  // The default style every other style will inherit from.
  // Used when no style is set through the options on a tooltip.
  'default': {
    border: 6,
    borderColor: '#c7c7c7',
    className: 'default',
    closeButton: false,
    hideAfter: false,
    hideOn: 'mouseleave',
    hook: false,
    //images: 'styles/creamy/',    // Example: different images. An absolute url or relative to the images url defined above.
    radius: 6,
    showOn: 'mousemove',
    stem: {
      //position: 'topLeft',       // Example: optional default stem position, this will also enable the stem
      height: 12,
      width: 15
    }
  },

  'item_tip': {
    hook: {target: 'topLeft', tip: 'topLeft'},
    offset: (Prototype.Browser.IE ? { x: -10, y: 0 } : { x: 0, y: 0 }),
    border: 1,
    radius: 0,
    prototipLoader: false,
    borderColor: '#c7c7c7',
    closeButton: false,
    hideAfter: false,
    delay: 0.5,
    hideOthers: true,
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/****************************************************************/
/*  original filename behaviors.js                        */
/****************************************************************/


Event.observe(window, 'load',
  function() {
    $$('a[rel=lightbox]').each(
      function(anchor){
        anchor.observe('click',
          function(event){
            var query = anchor.href.indexOf('?') == -1 ? '?' : '&';
            query += 'lightbox=true';
            Lightview.show({
              href: (anchor.href + query),
              rel: 'ajax',
              options: { autosize: false, topclose: true, menubar: false, width: 600, height: 420 }
            });
            event.stop();
          });
      });
  });


// Event.addBehavior({
//      "a[rel=lightbox]:click" : function(event) {
//        var query = this.href.indexOf('?') == -1 ? '?' : '&';
//        query += 'lightbox=true'
//        Lightview.show({
//          href: this.href + query,
//          rel: 'ajax',
//          options: {
//            autosize: false,
//            topclose: true,
//            menubar: false,
//            width: 600,
//            height: 420
//          }
//        });
//        return false;
//       },
// });
/****************************************************************/
/*  original filename request_with_spinner.js                        */
/****************************************************************/


// Common spinner element
// Should be a string to be able to display several spinners at one page
request_spinner_image = '<img class="spinner" src="/images/spinner.gif">';


function AjaxRequestWithSpinner(url, params, spinner, spinner_placeholder) {
  var getSpinnerCount = function() {
    return parseInt($(spinner).getAttribute("spinnercount")) || 0;
  }

  if (spinner && spinner_placeholder) {
    $(spinner_placeholder).update($(spinner));
    $(spinner).writeAttribute("spinnercount", getSpinnerCount() + 1)
  }

  var finish = function() {
    if (spinner && spinner_placeholder) {
      if (getSpinnerCount() <= 1) {
        $(spinner).writeAttribute("spinnercount", 0);
        $(spinner_placeholder).update("");
      }
      else {
        $(spinner).writeAttribute("spinnercount", getSpinnerCount() - 1);
      }
    }
  };

  var oC = params.onComplete;
  var oF = params.onFailure;

  params.onComplete = oC ? function(x,y,z){ finish(); return oC(x,y,z) } : finish;
  params.onFailure  = oF ? function(x,y,z){ finish(); return oF(x,y,z) } : finish;

  return new Ajax.Request(url, params);
}


// replace_with_spinner uses common spinner element
// do not use it in situations when you need any request statistics (like AjaxRequestWithSpinner)
//
// you can update element holder (if optional_holder_tag provided)
// instead of element (see connections/toggle_connect)
//
// $(element) is used instead of element for IE compatibility
function replace_with_spinner(element, optional_holder_class) {
  if (typeof optional_holder_class == 'undefined') optional_holder_class = 'toggle-connection-holder';
  e = $(element).up('.' + optional_holder_class);

  e.update(request_spinner_image);
}
/****************************************************************/
/*  original filename ajaxed_buttons_and_list.js                        */
/****************************************************************/


function AjaxedButtonsAndList(params){
  this.connections = null;
  Object.extend(this, params);
  this.request_in_progress = 0;
  if(this.suggestions_element)
    this.suggestions_element = $(this.suggestions_element);

  if (!this.connection_type)
    throw "Connection type is undefined";

  // Store instance ID to call it in AJAX response.
  // Should be synchronized with UserHelper.get_updater_id
  this.instanceID = this.type + '_' + this.connection_type;


  AjaxedButtonsAndList.instances.set(this.instanceID, this);
}

AjaxedButtonsAndList.instances = $H({});

// START SECTION: Static methods
AjaxedButtonsAndList.getInstanceByID = function(id)
{
  var obj = AjaxedButtonsAndList.instances.get(id)
  if (!obj)
    throw "Unable to instantiate AjaxedButtonsAndList by id=" + id

  return obj;
}

AjaxedButtonsAndList.connect_switch = function(instanceID, elem, id)
{
  AjaxedButtonsAndList.getInstanceByID(instanceID).connect_switch(elem, id);
}

AjaxedButtonsAndList.connect_disconnect = function(instanceID, bConnect, elem, id)
{
  AjaxedButtonsAndList.getInstanceByID(instanceID).connect_disconnect(bConnect, elem, id)
}

AjaxedButtonsAndList.set_connections = function(instanceID, connections)
{
  AjaxedButtonsAndList.getInstanceByID(instanceID).set_connections(connections)
}

AjaxedButtonsAndList.requests_pending = function(){
  var bPended = false;
  AjaxedButtonsAndList.instances.each(function(pair)
    {
      var count = pair.value.requests();
      if (count > 0){
        bPended = true;
        throw $break;
      }
    });
  return bPended;
};
// END SECTION: Static methods

AjaxedButtonsAndList.prototype.requests = function(){
  return this.request_in_progress > 0;
}

AjaxedButtonsAndList.prototype.end_request = function(response){
  if(response == this.suggestions_query || response.request == this.suggestions_query)
    this.suggestions_query = null;
  else if(--this.request_in_progress <= 0)
    this.spinner_placeholder.update("");
};

AjaxedButtonsAndList.prototype.set_icon = function(elm){
  var e = elm ? $(elm) : false;
  if(e)
    e.update(spinner);
  else if(this.request_in_progress <= 0)
    this.spinner_placeholder.update(spinner);
};

AjaxedButtonsAndList.prototype.enabled = function(){
  return this.connections ? true : false;
};

AjaxedButtonsAndList.prototype.create_additions = function(){
  if(this.additions)
    return this.additions;

  this.additions = {
    /*authenticity_token:  window._token,*/ //we have this in patch for prototype
    artist: this.artist_id,
    type: this.type,
    element: (typeof this.element != 'undefined' && this.element != null) ? this.element : '',
    instanceID: this.instanceID
  };
  
  if(typeof this.text_holder != 'undefined' && this.text_holder != null)
    this.additions.text_holder = this.text_holder;

  return this.additions;
};

AjaxedButtonsAndList.prototype.do_request = function(params, no_icon, no_increase){
  var additions = Object.clone(this.create_additions());

  Object.extend(additions, typeof params == 'object' ? params : params.toQueryParams());

  if(this.pre_send)
    if(this.pre_send(additions) == false)
      return false;

  if(!no_icon)
    this.set_icon();

  if(!no_increase)
    ++this.request_in_progress;

  return new Ajax.Request(this.url, {
    parameters: additions,
    onComplete: this.end_request.bind(this),
    onFailure: this.end_request.bind(this)
  });
};

AjaxedButtonsAndList.prototype.show_suggestions = function(evt){
  var elm = Event.element(evt);

  if(this.last_value == elm.value)
    return;

  if(this.suggestions_query){
    this.end_request(this.suggestions_query)
    this.suggestions_element.update("");
  }

  if(elm.value.length<3)
    return false;

  this.set_icon(this.suggestions_element);
  this.suggestions_query = this.do_request({
      type: this.type + '_suggestions',
      connection_type: this.connection_type,
      value: elm.value,
      element: this.suggestions_element.id
  }, true, true);
  this.last_value = elm.value;
};

/**
 * @param connections - array with connnection type to object. Key is an id of object connected to.
 *      Value is a hash: key is a type of connection can be one of 'artist' or 'enjoyer',
 *                       value is true
 */
AjaxedButtonsAndList.prototype.set_connections = function(connections){
  var e, x = this.dont_send_view ? null : this.get_connection_type();

  if(!this.connections)
    this.connections = connections;

  for(var i in this.connections){
     if(!(e = $(this.id_begin + i)))
       continue;

     if(this.connections[i] && (this.dont_send_view || this.connections[i][x]))
       e.addClassName(this.selected_class);
     else
       e.removeClassName(this.selected_class);
  }
};

AjaxedButtonsAndList.prototype.connections = function(v){
  return typeof v != 'undefined' ? this.connections[v] : this.connections;
};

AjaxedButtonsAndList.prototype.change_view = function(type){
  var params = {};

  if(!this.dont_send_view)
    params.view_type = (typeof type == 'undefined' ? this.get_connection_type() : type);

  this.do_request(params);
};

AjaxedButtonsAndList.prototype.get_connection_type = function(){
  return this.connection_type;
};

AjaxedButtonsAndList.prototype.change_style = function(connect, elem, id){
  try{
    if (connect)
      elem.addClassName(this.selected_class);
    else
      // Elem for disconnect style changes has to be found only in buttons list
      // while disconnect request could be sent from different places
      $(this.id_begin + id).removeClassName(this.selected_class);
  }catch(e){} 
};

// Calls this.connect_disconnect with connect command
// according to current elem state
AjaxedButtonsAndList.prototype.connect_switch = function(elem, id){
  this.connect_disconnect(!$(elem).hasClassName(this.selected_class),
                          elem, id);
};

AjaxedButtonsAndList.prototype.connect_disconnect = function(bConnect, elem, id){
  elem = $(elem);

  if(!this.enabled() ||
    (bConnect && elem.hasClassName(this.selected_class)) ||
    (bConnect && !this.validate())
  )
    return false;

  var params = {
    'id': id,
    action_type: bConnect ? 'connect' : 'disconnect'
  };

  this.change_style(bConnect, elem, id);

  if(this.dont_send_view){
    params.as = 'artist';
    this.connections[id] = bConnect;
  }else{
    params.as = params.view_type = this.get_connection_type();
    if(!this.connections[id])
      this.connections[id] = {};
    this.connections[id][params.as] = bConnect;
  }

  this.do_request(params);

  return true;
};

AjaxedButtonsAndList.prototype.validate = function()
{
  var valid = true;
  if ('function' == typeof(this.validatorFunc))
  {
    valid = this.validatorFunc(this.validatorOptions);
  }
  return valid;
};

AjaxedButtonsAndList.prototype.setValidator = function(validatorFunc, validatorOptions)
{
  this.validatorFunc = validatorFunc;
  this.validatorOptions = validatorOptions;
};


/****************************************************************/
/*  original filename connection_tab.js                        */
/****************************************************************/


function load_new_AjaxedButtonsAndList(tab_item_name, connection_type) {
  new_functionality = new AjaxedButtonsAndList({
      'spinner': spinner,
      'spinner_placeholder': $(connection_type + '_' + tab_item_name + 's-spinner'),
      'element': connection_type + '_' + tab_item_name + 's-ul',
      'type': tab_item_name + 's',
      'selected_class': 'categorie-item-selected', // !! stylesheet is same for all
      'id_begin': connection_type + '_' + tab_item_name + '_item_',
      'text_holder': connection_type + '_' + tab_item_name + 's-view-type',
      'url': url_for_ajax,
      'artist_id': artist_id,
      'connection_type': connection_type
    });

  new_functionality.change_view(connection_type);
  // set validator to limit count of artist-type connections to themes and categories
  var validatorOptions = {connection_type: connection_type, tab_item_name: tab_item_name}
  new_functionality.setValidator(validateConnectionsCount, validatorOptions)
  return new_functionality;
}

function load_connection_tabs(connection_type){
  if(typeof artist_id=='undefined' || artist_id<1)
    return;

  load_new_AjaxedButtonsAndList('categorie', connection_type);
  load_new_AjaxedButtonsAndList('theme', connection_type);

  var artists_tab_functionality = new AjaxedButtonsAndList({
      'spinner': spinner,
      'spinner_placeholder': $(connection_type + '_artists-spinner'),
      'element': connection_type + '_artists-ul',
      'type': 'artist',
      'id_begin': connection_type + '_artist_item_',
      'selected_class': 'categorie-item-selected',
      'url': url_for_ajax,
      'artist_id': artist_id,
      'text_holder': connection_type + '_artists-view-type',
      'suggestions_element': $(connection_type + '_suggestions-list-artist'),
      'connection_type': connection_type
    });

  artists_tab_functionality.change_view(connection_type);

  $(connection_type + '_artists_suggestions').observe('keyup',
                                   artists_tab_functionality.show_suggestions.bindAsEventListener(artists_tab_functionality));
};

/****************************************************************/
/*  original filename box_selector.js                        */
/****************************************************************/


var BoxSelector = {

  iterateElements: function(func) {
    $$('li.toggle-button', 'li.root-toggle-button').each(func)
  },
  
  submitAjaxFormOnChanges: function() {
    BoxSelector.iterateElements(function(el) {
      BoxSelector.inputFromElement(el).onHumanChange = function() { this.form.onsubmit(); }
    })
  },
  
  refreshState: function() {
    BoxSelector.iterateElements(function(item) {
      item.observe('click', BoxSelector.respondToClick);
      BoxSelector.changeBlockColorAccordingToValue(item, false);      
    })
  },
  
  respondToClick: function (event) {
    BoxSelector.changeBlockColorAccordingToValue(event.element(), true);
  },

  inputFromElement: function (element) {
    return element.select('input').first();
  },
  
  getSelectedCategories: function (element) {
     element.values = $('feed_categories').select('li.selected');
     element.submit();
  },
  
  changeBlockColorAccordingToValue: function (element, toggle_inputs) {
    input = BoxSelector.inputFromElement(element);
    if(toggle_inputs) {
      if(input.checked) {
        input.checked = false;
      } else {
        input.checked = true;
      }
      if(input.onHumanChange) {
        input.onHumanChange();
      }
    }
    
    if(input.checked) {
      BoxSelector.markBlockSelected(element);
    } else {
      BoxSelector.markBlockUnselected(element);
    }
  },
  
  markBlockSelected: function (element) {
    element.addClassName('selected');
    element.style.border='3px solid #666';
  },
  
  markBlockUnselected: function (element) {
    element.removeClassName('selected');
    element.style.border='3px solid rgb(238, 238, 238)';
  }
  
}
/****************************************************************/
/*  original filename dragdrop.js                        */
/****************************************************************/


// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

if(Object.isUndefined(Effect))
  throw("dragdrop.js requires including script.aculo.us' effects.js library");

var Droppables = {
  drops: [],

  remove: function(element) {
    this.drops = this.drops.reject(function(d) { return d.element==$(element) });
  },

  add: function(element) {
    element = $(element);
    var options = Object.extend({
      greedy:     true,
      hoverclass: null,
      tree:       false
    }, arguments[1] || { });

    // cache containers
    if(options.containment) {
      options._containers = [];
      var containment = options.containment;
      if(Object.isArray(containment)) {
        containment.each( function(c) { options._containers.push($(c)) });
      } else {
        options._containers.push($(containment));
      }
    }
    
    if(options.accept) options.accept = [options.accept].flatten();

    Element.makePositioned(element); // fix IE
    options.element = element;

    this.drops.push(options);
  },
  
  findDeepestChild: function(drops) {
    deepest = drops[0];
      
    for (i = 1; i < drops.length; ++i)
      if (Element.isParent(drops[i].element, deepest.element))
        deepest = drops[i];
    
    return deepest;
  },

  isContained: function(element, drop) {
    var containmentNode;
    if(drop.tree) {
      containmentNode = element.treeNode; 
    } else {
      containmentNode = element.parentNode;
    }
    return drop._containers.detect(function(c) { return containmentNode == c });
  },
  
  isAffected: function(point, element, drop) {
    return (
      (drop.element!=element) &&
      ((!drop._containers) ||
        this.isContained(element, drop)) &&
      ((!drop.accept) ||
        (Element.classNames(element).detect( 
          function(v) { return drop.accept.include(v) } ) )) &&
      Position.within(drop.element, point[0], point[1]) );
  },

  deactivate: function(drop) {
    if(drop.hoverclass)
      Element.removeClassName(drop.element, drop.hoverclass);
    this.last_active = null;
  },

  activate: function(drop) {
    if(drop.hoverclass)
      Element.addClassName(drop.element, drop.hoverclass);
    this.last_active = drop;
  },

  show: function(point, element) {
    if(!this.drops.length) return;
    var drop, affected = [];
    
    this.drops.each( function(drop) {
      if(Droppables.isAffected(point, element, drop))
        affected.push(drop);
    });
        
    if(affected.length>0)
      drop = Droppables.findDeepestChild(affected);

    if(this.last_active && this.last_active != drop) this.deactivate(this.last_active);
    if (drop) {
      Position.within(drop.element, point[0], point[1]);
      if(drop.onHover)
        drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
      
      if (drop != this.last_active) Droppables.activate(drop);
    }
  },

  fire: function(event, element) {
    if(!this.last_active) return;
    Position.prepare();

    if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
      if (this.last_active.onDrop) {
        this.last_active.onDrop(element, this.last_active.element, event); 
        return true; 
      }
  },

  reset: function() {
    if(this.last_active)
      this.deactivate(this.last_active);
  }
}

var Draggables = {
  drags: [],
  observers: [],
  
  register: function(draggable) {
    if(this.drags.length == 0) {
      this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
      this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
      this.eventKeypress  = this.keyPress.bindAsEventListener(this);
      
      Event.observe(document, "mouseup", this.eventMouseUp);
      Event.observe(document, "mousemove", this.eventMouseMove);
      Event.observe(document, "keypress", this.eventKeypress);
    }
    this.drags.push(draggable);
  },
  
  unregister: function(draggable) {
    this.drags = this.drags.reject(function(d) { return d==draggable });
    if(this.drags.length == 0) {
      Event.stopObserving(document, "mouseup", this.eventMouseUp);
      Event.stopObserving(document, "mousemove", this.eventMouseMove);
      Event.stopObserving(document, "keypress", this.eventKeypress);
    }
  },
  
  activate: function(draggable) {
    if(draggable.options.delay) { 
      this._timeout = setTimeout(function() { 
        Draggables._timeout = null; 
        window.focus(); 
        Draggables.activeDraggable = draggable; 
      }.bind(this), draggable.options.delay); 
    } else {
      window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
      this.activeDraggable = draggable;
    }
  },
  
  deactivate: function() {
    this.activeDraggable = null;
  },
  
  updateDrag: function(event) {
    if(!this.activeDraggable) return;
    var pointer = [Event.pointerX(event), Event.pointerY(event)];
    // Mozilla-based browsers fire successive mousemove events with
    // the same coordinates, prevent needless redrawing (moz bug?)
    if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
    this._lastPointer = pointer;
    
    this.activeDraggable.updateDrag(event, pointer);
  },
  
  endDrag: function(event) {
    if(this._timeout) { 
      clearTimeout(this._timeout); 
      this._timeout = null; 
    }
    if(!this.activeDraggable) return;
    this._lastPointer = null;
    this.activeDraggable.endDrag(event);
    this.activeDraggable = null;
  },
  
  keyPress: function(event) {
    if(this.activeDraggable)
      this.activeDraggable.keyPress(event);
  },
  
  addObserver: function(observer) {
    this.observers.push(observer);
    this._cacheObserverCallbacks();
  },
  
  removeObserver: function(element) {  // element instead of observer fixes mem leaks
    this.observers = this.observers.reject( function(o) { return o.element==element });
    this._cacheObserverCallbacks();
  },
  
  notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'
    if(this[eventName+'Count'] > 0)
      this.observers.each( function(o) {
        if(o[eventName]) o[eventName](eventName, draggable, event);
      });
    if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
  },
  
  _cacheObserverCallbacks: function() {
    ['onStart','onEnd','onDrag'].each( function(eventName) {
      Draggables[eventName+'Count'] = Draggables.observers.select(
        function(o) { return o[eventName]; }
      ).length;
    });
  }
}

/*--------------------------------------------------------------------------*/

var Draggable = Class.create({
  initialize: function(element) {
    var defaults = {
      handle: false,
      reverteffect: function(element, top_offset, left_offset) {
        var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
        new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
          queue: {scope:'_draggable', position:'end'}
        });
      },
      endeffect: function(element) {
        var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
        new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, 
          queue: {scope:'_draggable', position:'end'},
          afterFinish: function(){ 
            Draggable._dragging[element] = false 
          }
        }); 
      },
      zindex: 1000,
      revert: false,
      quiet: false,
      scroll: false,
      scrollSensitivity: 20,
      scrollSpeed: 15,
      snap: false,  // false, or xy or [x,y] or function(x,y){ return [x,y] }
      delay: 0
    };
    
    if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))
      Object.extend(defaults, {
        starteffect: function(element) {
          element._opacity = Element.getOpacity(element);
          Draggable._dragging[element] = true;
          new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); 
        }
      });
    
    var options = Object.extend(defaults, arguments[1] || { });

    this.element = $(element);
    
    if(options.handle && Object.isString(options.handle))
      this.handle = this.element.down('.'+options.handle, 0);
    
    if(!this.handle) this.handle = $(options.handle);
    if(!this.handle) this.handle = this.element;
    
    if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
      options.scroll = $(options.scroll);
      this._isScrollChild = Element.childOf(this.element, options.scroll);
    }

    Element.makePositioned(this.element); // fix IE    

    this.options  = options;
    this.dragging = false;   

    this.eventMouseDown = this.initDrag.bindAsEventListener(this);
    Event.observe(this.handle, "mousedown", this.eventMouseDown);
    
    Draggables.register(this);
  },
  
  destroy: function() {
    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
    Draggables.unregister(this);
  },
  
  currentDelta: function() {
    return([
      parseInt(Element.getStyle(this.element,'left') || '0'),
      parseInt(Element.getStyle(this.element,'top') || '0')]);
  },
  
  initDrag: function(event) {
    if(!Object.isUndefined(Draggable._dragging[this.element]) &&
      Draggable._dragging[this.element]) return;
    if(Event.isLeftClick(event)) {    
      // abort on form elements, fixes a Firefox issue
      var src = Event.element(event);
      if((tag_name = src.tagName.toUpperCase()) && (
        tag_name=='INPUT' ||
        tag_name=='SELECT' ||
        tag_name=='OPTION' ||
        tag_name=='BUTTON' ||
        tag_name=='TEXTAREA')) return;
        
      var pointer = [Event.pointerX(event), Event.pointerY(event)];
      var pos     = Position.cumulativeOffset(this.element);
      this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
      
      Draggables.activate(this);
      Event.stop(event);
    }
  },
  
  startDrag: function(event) {
    this.dragging = true;
    if(!this.delta)
      this.delta = this.currentDelta();
    
    if(this.options.zindex) {
      this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
      this.element.style.zIndex = this.options.zindex;
    }
    
    if(this.options.ghosting) {
      this._clone = this.element.cloneNode(true);
      this.element._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
      if (!this.element._originallyAbsolute)
        Position.absolutize(this.element);
      this.element.parentNode.insertBefore(this._clone, this.element);
    }
    
    if(this.options.scroll) {
      if (this.options.scroll == window) {
        var where = this._getWindowScroll(this.options.scroll);
        this.originalScrollLeft = where.left;
        this.originalScrollTop = where.top;
      } else {
        this.originalScrollLeft = this.options.scroll.scrollLeft;
        this.originalScrollTop = this.options.scroll.scrollTop;
      }
    }
    
    Draggables.notify('onStart', this, event);
        
    if(this.options.starteffect) this.options.starteffect(this.element);
  },
  
  updateDrag: function(event, pointer) {
    if(!this.dragging) this.startDrag(event);
    
    if(!this.options.quiet){
      Position.prepare();
      Droppables.show(pointer, this.element);
    }
    
    Draggables.notify('onDrag', this, event);
    
    this.draw(pointer);
    if(this.options.change) this.options.change(this);
    
    if(this.options.scroll) {
      this.stopScrolling();
      
      var p;
      if (this.options.scroll == window) {
        with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
      } else {
        p = Position.page(this.options.scroll);
        p[0] += this.options.scroll.scrollLeft + Position.deltaX;
        p[1] += this.options.scroll.scrollTop + Position.deltaY;
        p.push(p[0]+this.options.scroll.offsetWidth);
        p.push(p[1]+this.options.scroll.offsetHeight);
      }
      var speed = [0,0];
      if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
      if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
      if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
      if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
      this.startScrolling(speed);
    }
    
    // fix AppleWebKit rendering
    if(Prototype.Browser.WebKit) window.scrollBy(0,0);
    
    Event.stop(event);
  },
  
  finishDrag: function(event, success) {
    this.dragging = false;
    
    if(this.options.quiet){
      Position.prepare();
      var pointer = [Event.pointerX(event), Event.pointerY(event)];
      Droppables.show(pointer, this.element);
    }

    if(this.options.ghosting) {
      if (!this.element._originallyAbsolute)
        Position.relativize(this.element);
      delete this.element._originallyAbsolute;
      Element.remove(this._clone);
      this._clone = null;
    }

    var dropped = false; 
    if(success) { 
      dropped = Droppables.fire(event, this.element); 
      if (!dropped) dropped = false; 
    }
    if(dropped && this.options.onDropped) this.options.onDropped(this.element);
    Draggables.notify('onEnd', this, event);

    var revert = this.options.revert;
    if(revert && Object.isFunction(revert)) revert = revert(this.element);
    
    var d = this.currentDelta();
    if(revert && this.options.reverteffect) {
      if (dropped == 0 || revert != 'failure')
        this.options.reverteffect(this.element,
          d[1]-this.delta[1], d[0]-this.delta[0]);
    } else {
      this.delta = d;
    }

    if(this.options.zindex)
      this.element.style.zIndex = this.originalZ;

    if(this.options.endeffect) 
      this.options.endeffect(this.element);
      
    Draggables.deactivate(this);
    Droppables.reset();
  },
  
  keyPress: function(event) {
    if(event.keyCode!=Event.KEY_ESC) return;
    this.finishDrag(event, false);
    Event.stop(event);
  },
  
  endDrag: function(event) {
    if(!this.dragging) return;
    this.stopScrolling();
    this.finishDrag(event, true);
    Event.stop(event);
  },
  
  draw: function(point) {
    var pos = Position.cumulativeOffset(this.element);
    if(this.options.ghosting) {
      var r   = Position.realOffset(this.element);
      pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
    }
    
    var d = this.currentDelta();
    pos[0] -= d[0]; pos[1] -= d[1];
    
    if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
      pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
      pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
    }
    
    var p = [0,1].map(function(i){ 
      return (point[i]-pos[i]-this.offset[i]) 
    }.bind(this));
    
    if(this.options.snap) {
      if(Object.isFunction(this.options.snap)) {
        p = this.options.snap(p[0],p[1],this);
      } else {
      if(Object.isArray(this.options.snap)) {
        p = p.map( function(v, i) {
          return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this))
      } else {
        p = p.map( function(v) {
          return (v/this.options.snap).round()*this.options.snap }.bind(this))
      }
    }}
    
    var style = this.element.style;
    if((!this.options.constraint) || (this.options.constraint=='horizontal'))
      style.left = p[0] + "px";
    if((!this.options.constraint) || (this.options.constraint=='vertical'))
      style.top  = p[1] + "px";
    
    if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
  },
  
  stopScrolling: function() {
    if(this.scrollInterval) {
      clearInterval(this.scrollInterval);
      this.scrollInterval = null;
      Draggables._lastScrollPointer = null;
    }
  },
  
  startScrolling: function(speed) {
    if(!(speed[0] || speed[1])) return;
    this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
    this.lastScrolled = new Date();
    this.scrollInterval = setInterval(this.scroll.bind(this), 10);
  },
  
  scroll: function() {
    var current = new Date();
    var delta = current - this.lastScrolled;
    this.lastScrolled = current;
    if(this.options.scroll == window) {
      with (this._getWindowScroll(this.options.scroll)) {
        if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
          var d = delta / 1000;
          this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
        }
      }
    } else {
      this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
      this.options.scroll.scrollTop  += this.scrollSpeed[1] * delta / 1000;
    }
    
    Position.prepare();
    Droppables.show(Draggables._lastPointer, this.element);
    Draggables.notify('onDrag', this);
    if (this._isScrollChild) {
      Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
      Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
      Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
      if (Draggables._lastScrollPointer[0] < 0)
        Draggables._lastScrollPointer[0] = 0;
      if (Draggables._lastScrollPointer[1] < 0)
        Draggables._lastScrollPointer[1] = 0;
      this.draw(Draggables._lastScrollPointer);
    }
    
    if(this.options.change) this.options.change(this);
  },
  
  _getWindowScroll: function(w) {
    var T, L, W, H;
    with (w.document) {
      if (w.document.documentElement && documentElement.scrollTop) {
        T = documentElement.scrollTop;
        L = documentElement.scrollLeft;
      } else if (w.document.body) {
        T = body.scrollTop;
        L = body.scrollLeft;
      }
      if (w.innerWidth) {
        W = w.innerWidth;
        H = w.innerHeight;
      } else if (w.document.documentElement && documentElement.clientWidth) {
        W = documentElement.clientWidth;
        H = documentElement.clientHeight;
      } else {
        W = body.offsetWidth;
        H = body.offsetHeight
      }
    }
    return { top: T, left: L, width: W, height: H };
  }
});

Draggable._dragging = { };

/*--------------------------------------------------------------------------*/

var SortableObserver = Class.create({
  initialize: function(element, observer) {
    this.element   = $(element);
    this.observer  = observer;
    this.lastValue = Sortable.serialize(this.element);
  },
  
  onStart: function() {
    this.lastValue = Sortable.serialize(this.element);
  },
  
  onEnd: function() {
    Sortable.unmark();
    if(this.lastValue != Sortable.serialize(this.element))
      this.observer(this.element)
  }
});

var Sortable = {
  SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
  
  sortables: { },
  
  _findRootElement: function(element) {
    while (element.tagName.toUpperCase() != "BODY") {  
      if(element.id && Sortable.sortables[element.id]) return element;
      element = element.parentNode;
    }
  },

  options: function(element) {
    element = Sortable._findRootElement($(element));
    if(!element) return;
    return Sortable.sortables[element.id];
  },
  
  destroy: function(element){
    var s = Sortable.options(element);
    
    if(s) {
      Draggables.removeObserver(s.element);
      s.droppables.each(function(d){ Droppables.remove(d) });
      s.draggables.invoke('destroy');
      
      delete Sortable.sortables[s.element.id];
    }
  },

  create: function(element) {
    element = $(element);
    var options = Object.extend({ 
      element:     element,
      tag:         'li',       // assumes li children, override with tag: 'tagname'
      dropOnEmpty: false,
      tree:        false,
      treeTag:     'ul',
      overlap:     'vertical', // one of 'vertical', 'horizontal'
      constraint:  'vertical', // one of 'vertical', 'horizontal', false
      containment: element,    // also takes array of elements (or id's); or false
      handle:      false,      // or a CSS class
      only:        false,
      delay:       0,
      hoverclass:  null,
      ghosting:    false,
      quiet:       false, 
      scroll:      false,
      scrollSensitivity: 20,
      scrollSpeed: 15,
      format:      this.SERIALIZE_RULE,
      
      // these take arrays of elements or ids and can be 
      // used for better initialization performance
      elements:    false,
      handles:     false,
      
      onChange:    Prototype.emptyFunction,
      onUpdate:    Prototype.emptyFunction
    }, arguments[1] || { });

    // clear any old sortable with same element
    this.destroy(element);

    // build options for the draggables
    var options_for_draggable = {
      revert:      true,
      quiet:       options.quiet,
      scroll:      options.scroll,
      scrollSpeed: options.scrollSpeed,
      scrollSensitivity: options.scrollSensitivity,
      delay:       options.delay,
      ghosting:    options.ghosting,
      constraint:  options.constraint,
      handle:      options.handle };

    if(options.starteffect)
      options_for_draggable.starteffect = options.starteffect;

    if(options.reverteffect)
      options_for_draggable.reverteffect = options.reverteffect;
    else
      if(options.ghosting) options_for_draggable.reverteffect = function(element) {
        element.style.top  = 0;
        element.style.left = 0;
      };

    if(options.endeffect)
      options_for_draggable.endeffect = options.endeffect;

    if(options.zindex)
      options_for_draggable.zindex = options.zindex;

    // build options for the droppables  
    var options_for_droppable = {
      overlap:     options.overlap,
      containment: options.containment,
      tree:        options.tree,
      hoverclass:  options.hoverclass,
      onHover:     Sortable.onHover
    }
    
    var options_for_tree = {
      onHover:      Sortable.onEmptyHover,
      overlap:      options.overlap,
      containment:  options.containment,
      hoverclass:   options.hoverclass
    }

    // fix for gecko engine
    Element.cleanWhitespace(element); 

    options.draggables = [];
    options.droppables = [];

    // drop on empty handling
    if(options.dropOnEmpty || options.tree) {
      Droppables.add(element, options_for_tree);
      options.droppables.push(element);
    }

    (options.elements || this.findElements(element, options) || []).each( function(e,i) {
      var handle = options.handles ? $(options.handles[i]) :
        (options.handle ? $(e).select('.' + options.handle)[0] : e); 
      options.draggables.push(
        new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
      Droppables.add(e, options_for_droppable);
      if(options.tree) e.treeNode = element;
      options.droppables.push(e);      
    });
    
    if(options.tree) {
      (Sortable.findTreeElements(element, options) || []).each( function(e) {
        Droppables.add(e, options_for_tree);
        e.treeNode = element;
        options.droppables.push(e);
      });
    }

    // keep reference
    this.sortables[element.id] = options;

    // for onupdate
    Draggables.addObserver(new SortableObserver(element, options.onUpdate));

  },

  // return all suitable-for-sortable elements in a guaranteed order
  findElements: function(element, options) {
    return Element.findChildren(
      element, options.only, options.tree ? true : false, options.tag);
  },
  
  findTreeElements: function(element, options) {
    return Element.findChildren(
      element, options.only, options.tree ? true : false, options.treeTag);
  },

  onHover: function(element, dropon, overlap) {
    if(Element.isParent(dropon, element)) return;

    if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
      return;
    } else if(overlap>0.5) {
      Sortable.mark(dropon, 'before');
      if(dropon.previousSibling != element) {
        var oldParentNode = element.parentNode;
        element.style.visibility = "hidden"; // fix gecko rendering
        dropon.parentNode.insertBefore(element, dropon);
        if(dropon.parentNode!=oldParentNode) 
          Sortable.options(oldParentNode).onChange(element);
        Sortable.options(dropon.parentNode).onChange(element);
      }
    } else {
      Sortable.mark(dropon, 'after');
      var nextElement = dropon.nextSibling || null;
      if(nextElement != element) {
        var oldParentNode = element.parentNode;
        element.style.visibility = "hidden"; // fix gecko rendering
        dropon.parentNode.insertBefore(element, nextElement);
        if(dropon.parentNode!=oldParentNode) 
          Sortable.options(oldParentNode).onChange(element);
        Sortable.options(dropon.parentNode).onChange(element);
      }
    }
  },
  
  onEmptyHover: function(element, dropon, overlap) {
    var oldParentNode = element.parentNode;
    var droponOptions = Sortable.options(dropon);
        
    if(!Element.isParent(dropon, element)) {
      var index;
      
      var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});
      var child = null;
            
      if(children) {
        var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);
        
        for (index = 0; index < children.length; index += 1) {
          if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
            offset -= Element.offsetSize (children[index], droponOptions.overlap);
          } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
            child = index + 1 < children.length ? children[index + 1] : null;
            break;
          } else {
            child = children[index];
            break;
          }
        }
      }
      
      dropon.insertBefore(element, child);
      
      Sortable.options(oldParentNode).onChange(element);
      droponOptions.onChange(element);
    }
  },

  unmark: function() {
    if(Sortable._marker) Sortable._marker.hide();
  },

  mark: function(dropon, position) {
    // mark on ghosting only
    var sortable = Sortable.options(dropon.parentNode);
    if(sortable && !sortable.ghosting) return; 

    if(!Sortable._marker) {
      Sortable._marker = 
        ($('dropmarker') || Element.extend(document.createElement('DIV'))).
          hide().addClassName('dropmarker').setStyle({position:'absolute'});
      document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
    }    
    var offsets = Position.cumulativeOffset(dropon);
    Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
    
    if(position=='after')
      if(sortable.overlap == 'horizontal') 
        Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
      else
        Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
    
    Sortable._marker.show();
  },
  
  _tree: function(element, options, parent) {
    var children = Sortable.findElements(element, options) || [];
  
    for (var i = 0; i < children.length; ++i) {
      var match = children[i].id.match(options.format);

      if (!match) continue;
      
      var child = {
        id: encodeURIComponent(match ? match[1] : null),
        element: element,
        parent: parent,
        children: [],
        position: parent.children.length,
        container: $(children[i]).down(options.treeTag)
      }
      
      /* Get the element containing the children and recurse over it */
      if (child.container)
        this._tree(child.container, options, child)
      
      parent.children.push (child);
    }

    return parent; 
  },

  tree: function(element) {
    element = $(element);
    var sortableOptions = this.options(element);
    var options = Object.extend({
      tag: sortableOptions.tag,
      treeTag: sortableOptions.treeTag,
      only: sortableOptions.only,
      name: element.id,
      format: sortableOptions.format
    }, arguments[1] || { });
    
    var root = {
      id: null,
      parent: null,
      children: [],
      container: element,
      position: 0
    }
    
    return Sortable._tree(element, options, root);
  },

  /* Construct a [i] index for a particular node */
  _constructIndex: function(node) {
    var index = '';
    do {
      if (node.id) index = '[' + node.position + ']' + index;
    } while ((node = node.parent) != null);
    return index;
  },

  sequence: function(element) {
    element = $(element);
    var options = Object.extend(this.options(element), arguments[1] || { });
    
    return $(this.findElements(element, options) || []).map( function(item) {
      return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
    });
  },

  setSequence: function(element, new_sequence) {
    element = $(element);
    var options = Object.extend(this.options(element), arguments[2] || { });
    
    var nodeMap = { };
    this.findElements(element, options).each( function(n) {
        if (n.id.match(options.format))
            nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
        n.parentNode.removeChild(n);
    });
   
    new_sequence.each(function(ident) {
      var n = nodeMap[ident];
      if (n) {
        n[1].appendChild(n[0]);
        delete nodeMap[ident];
      }
    });
  },
  
  serialize: function(element) {
    element = $(element);
    var options = Object.extend(Sortable.options(element), arguments[1] || { });
    var name = encodeURIComponent(
      (arguments[1] && arguments[1].name) ? arguments[1].name : element.id);
    
    if (options.tree) {
      return Sortable.tree(element, arguments[1]).children.map( function (item) {
        return [name + Sortable._constructIndex(item) + "[id]=" + 
                encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
      }).flatten().join('&');
    } else {
      return Sortable.sequence(element, arguments[1]).map( function(item) {
        return name + "[]=" + encodeURIComponent(item);
      }).join('&');
    }
  }
}

// Returns true if child is contained within element
Element.isParent = function(child, element) {
  if (!child.parentNode || child == element) return false;
  if (child.parentNode == element) return true;
  return Element.isParent(child.parentNode, element);
}

Element.findChildren = function(element, only, recursive, tagName) {   
  if(!element.hasChildNodes()) return null;
  tagName = tagName.toUpperCase();
  if(only) only = [only].flatten();
  var elements = [];
  $A(element.childNodes).each( function(e) {
    if(e.tagName && e.tagName.toUpperCase()==tagName &&
      (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
        elements.push(e);
    if(recursive) {
      var grandchildren = Element.findChildren(e, only, recursive, tagName);
      if(grandchildren) elements.push(grandchildren);
    }
  });

  return (elements.length>0 ? elements.flatten() : []);
}

Element.offsetSize = function (element, type) {
  return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];
}

/****************************************************************/
/*  original filename builder.js                        */
/****************************************************************/


// script.aculo.us builder.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

var Builder = {
  NODEMAP: {
    AREA: 'map',
    CAPTION: 'table',
    COL: 'table',
    COLGROUP: 'table',
    LEGEND: 'fieldset',
    OPTGROUP: 'select',
    OPTION: 'select',
    PARAM: 'object',
    TBODY: 'table',
    TD: 'table',
    TFOOT: 'table',
    TH: 'table',
    THEAD: 'table',
    TR: 'table'
  },
  // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
  //       due to a Firefox bug
  node: function(elementName) {
    elementName = elementName.toUpperCase();
    
    // try innerHTML approach
    var parentTag = this.NODEMAP[elementName] || 'div';
    var parentElement = document.createElement(parentTag);
    try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
      parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
    } catch(e) {}
    var element = parentElement.firstChild || null;
      
    // see if browser added wrapping tags
    if(element && (element.tagName.toUpperCase() != elementName))
      element = element.getElementsByTagName(elementName)[0];
    
    // fallback to createElement approach
    if(!element) element = document.createElement(elementName);
    
    // abort if nothing could be created
    if(!element) return;

    // attributes (or text)
    if(arguments[1])
      if(this._isStringOrNumber(arguments[1]) ||
        (arguments[1] instanceof Array) ||
        arguments[1].tagName) {
          this._children(element, arguments[1]);
        } else {
          var attrs = this._attributes(arguments[1]);
          if(attrs.length) {
            try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
              parentElement.innerHTML = "<" +elementName + " " +
                attrs + "></" + elementName + ">";
            } catch(e) {}
            element = parentElement.firstChild || null;
            // workaround firefox 1.0.X bug
            if(!element) {
              element = document.createElement(elementName);
              for(attr in arguments[1]) 
                element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
            }
            if(element.tagName.toUpperCase() != elementName)
              element = parentElement.getElementsByTagName(elementName)[0];
          }
        } 

    // text, or array of children
    if(arguments[2])
      this._children(element, arguments[2]);

     return element;
  },
  _text: function(text) {
     return document.createTextNode(text);
  },

  ATTR_MAP: {
    'className': 'class',
    'htmlFor': 'for'
  },

  _attributes: function(attributes) {
    var attrs = [];
    for(attribute in attributes)
      attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +
          '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'&quot;') + '"');
    return attrs.join(" ");
  },
  _children: function(element, children) {
    if(children.tagName) {
      element.appendChild(children);
      return;
    }
    if(typeof children=='object') { // array can hold nodes and text
      children.flatten().each( function(e) {
        if(typeof e=='object')
          element.appendChild(e)
        else
          if(Builder._isStringOrNumber(e))
            element.appendChild(Builder._text(e));
      });
    } else
      if(Builder._isStringOrNumber(children))
        element.appendChild(Builder._text(children));
  },
  _isStringOrNumber: function(param) {
    return(typeof param=='string' || typeof param=='number');
  },
  build: function(html) {
    var element = this.node('div');
    $(element).update(html.strip());
    return element.down();
  },
  dump: function(scope) { 
    if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope 
  
    var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
      "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
      "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
      "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
      "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
      "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);
  
    tags.each( function(tag){ 
      scope[tag] = function() { 
        return Builder.node.apply(Builder, [tag].concat($A(arguments)));  
      } 
    });
  }
}

/****************************************************************/
/*  original filename scal-calendar.js                        */
/****************************************************************/


/*  Scal - prototype calendar/date picker
 *   - Jamie Grove
 *   - Ian Tyndall
 *
 *  Scal is freely distributable under the terms of an MIT-style license.
 *  For details, see the Scal web site: http://scal.fieldguidetoprogrammers.com
 *
 *--------------------------------------------------------------------------*/
Object.extend(Date.prototype, {
    monthnames: ['January','February','March','April','May','June','July','August','September','October','November','December'],
    daynames: ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'],
    succ: function(){
        var sd = new Date(this.getFullYear(),this.getMonth(),this.getDate()+1);
        sd.setHours(this.getHours(),this.getMinutes(),this.getSeconds(),this.getMilliseconds());
        return sd;
    },
    firstofmonth: function(){
        return new Date(this.getFullYear(),this.getMonth(),1);
    },
    lastofmonth: function(){
        return new Date(this.getFullYear(),this.getMonth()+1,0);
    },
    formatPadding: true,
    format: function(f){
        if (!this.valueOf()) { return '&nbsp;'; }
        var d = this;
        var formats = {
            'yyyy' : d.getFullYear(),
            'mmmm': this.monthnames[d.getMonth()],
            'mmm':  this.monthnames[d.getMonth()].substr(0, 3),
            'mm':   this.formatPadding ? ((d.getMonth()).succ()).toPaddedString(2) : (d.getMonth()).succ(),
            'dddd': this.daynames[d.getDay()],
            'ddd':  this.daynames[d.getDay()].substr(0, 3),
            'dd':   d.getDate().toPaddedString(2)
            // 'hh':   h = d.getHours() % 12 ? h : 12,
            // 'nn':   d.getMinutes(),
            // 'ss':   d.getSeconds(),
            // 'a/p':  d.getHours() < 12 ? 'a' : 'p'
        };
        return f.gsub(/(yyyy|mmmm|mmm|mm|dddd|ddd|dd|hh|nn|ss|a\/p)/i,
            function(match) { return formats[match[0].toLowerCase()]; });
    }
});

var scal = {};
scal = Class.create();
scal.prototype = {
    initialize: function(element,update) {
        this.element = $(element);
        var type = Try.these(
            function(){ if(!Object.isUndefined(Effect)) { return 'Effect'; }},
            function(){ return 'Element'; }
        );  
        var currentYear = 
        this.options = Object.extend({
          oncalchange: Prototype.emptyFunction,
          daypadding: false,
          titleformat: 'mmmm yyyy',
          updateformat: 'yyyy-mm-dd',
          closebutton: 'X',
          prevbutton: '&laquo;',
          nextbutton: '&raquo;',
          yearnext: '&raquo;&raquo;',
          yearprev: '&laquo;&laquo;',
          openeffect: type == 'Effect' ? Effect.Appear : Element.show,
          closeeffect: type == 'Effect' ? Effect.Fade : Element.hide,
          onclose: Prototype.emptyFunction,
          onopen: Prototype.emptyFunction,
          exactweeks: false,
          dayheadlength: 2,
          weekdaystart: 0,
          planner: false,
          tabular: false
        }, arguments[2] || { });   
        this.table = false;
        this.thead = false;
        this.startdate = this._setStartDate(arguments[2]);
        if(this.options.planner) { this.planner = this._setupPlanner(this.options.planner); }
        if(this.options.tabular) { 
            this.table = new Element('table',{'class': 'cal_table',border: 0,cellspacing: 0,cellpadding: 0});
            this.thead = new Element('thead');
            this.table.insert(this.thead);
            this.element.insert(this.table);
        }
        this.updateelement = update;
        this._setCurrentDate(this.startdate); 
        this.initDate = new Date(this.currentdate);
        this.controls = this._buildControls();
        this.title.setAttribute('title', this.initDate.format(this.options.titleformat));
        this._updateTitles();
        this[this.table ? 'thead' : 'element'].insert(this.controls);
        this.cal_wrapper = this._buildHead();
        this.cells = [];
        this._buildCal();
    },
/*------------------------------- INTERNAL -------------------------------*/    
    _setStartDate: function() {
	var args = arguments[0];
        var startday = new Date();
        this.options.month = args && args.month && Object.isNumber(args.month) ? args.month - 1 : startday.getMonth();
        this.options.year = args && args.year && Object.isNumber(args.year) ? args.year : startday.getFullYear();
        this.options.day = args && args.day && Object.isNumber(args.day) ? args.day : (this.options.month != startday.getMonth()) ? 1 : startday.getDate();
        startday.setHours(0,0,0,0);
        startday.setDate(this.options.day);
        startday.setMonth(this.options.month);
        startday.setFullYear(this.options.year);
        return startday;
    },
    _emptyCells: function() {
        if(this.cells.size() > 0) { 
            this.cells.invoke('stopObserving'); 
            this.cells.invoke('remove');
            this.cells = [];
        }
    },
    _buildCal: function() {
        this._emptyCells();
        if(!(Object.isUndefined(this.cal_weeks_wrapper) || this.table)) { this.cal_weeks_wrapper.remove(); }
        this.cal_weeks_wrapper = this._buildWrapper();
        if(this.table) {
            this.table.select('tbody tr.weekbox:not(.weekboxname)').invoke('remove');
            this.table.select('tbody.cal_wrapper').invoke('remove');
            this.cal_weeks_wrapper.each(function(row){
                this.cal_wrapper.insert(row);
            }.bind(this));
        } else {
            this.cal_wrapper.insert(this.cal_weeks_wrapper);
        }
        this[this.table ? 'table' : 'element'].insert(this.cal_wrapper);
    },
    _click: function(event,cellIndex) {
        this.element.select('.dayselected').invoke('removeClassName', 'dayselected');
        (event.target.hasClassName('daybox') ? event.target : event.target.up()).addClassName('dayselected');
        this._setCurrentDate(this.dateRange[cellIndex]);
        this._updateExternal();
    },
    _updateExternal: function(){	
        if (Object.isFunction(this.updateelement)){
            this.updateelement(this.currentdate);
        } else {	
            var updateElement = $(this.updateelement);
            updateElement[updateElement.tagName == 'INPUT' ? 'setValue' : 'update'](this.currentdate.format(this.options.updateformat));
        }            
    },    
    _buildHead: function() {
        var cal_wrapper = new Element(this.table ? 'tbody' : 'div',{'class':'cal_wrapper'});
        var weekbox = new Element(this.table ? 'tr' : 'div',{'class':'weekbox weekboxname'});
        Date.prototype.daynames.sortBy(function(s,i){
            i-=this.options.weekdaystart;
            if(i<0){i+=7;}
            return i;
        }.bind(this)).each(function(day,i) {
        var cell = new Element(this.table ? 'td' : 'div',{'class':'cal_day_name_'+ i});
        cell.addClassName('daybox').addClassName('dayboxname').update(day.substr(0,this.options.dayheadlength));
        if(i == 6) { cell.addClassName('endweek'); }
        weekbox.insert(cell);
        }.bind(this));
        return cal_wrapper.insert(weekbox);
    },
    _buildWrapper: function() {
        var firstdaycal = new Date(this.firstofmonth.getFullYear(),this.firstofmonth.getMonth(),this.firstofmonth.getDate());
        var lastdaycal = new Date(this.lastofmonth.getFullYear(),this.lastofmonth.getMonth(),this.lastofmonth.getDate());
        firstdaycal.setDate(firstdaycal.getDate() - firstdaycal.getDay() + this.options.weekdaystart);
        var dateRange = $A($R(firstdaycal,lastdaycal));
        var cal_weeks_wrapper = this.table ? [] : new Element('div',{'class': 'calweekswrapper'});
        var wk;
        var row;
        var lastday;
        this.dateRange = [];
        this.indicators = []; // holds values to determine if continued checking for custom classes is needed
        var buildWeek = function(day) {
            row.insert(this._buildDay(wk, day));
            lastday = day;
        }.bind(this);       
        dateRange.eachSlice(7, function(slice,i) {
            wk = i;
            row = new Element(this.table ? 'tr' : 'div',{'class':'cal_week_' + wk}).addClassName('weekbox');
            while(slice.length < 7) { 
                slice.push(slice.last().succ());
            }
            slice.map(buildWeek);	
            cal_weeks_wrapper[this.table ? 'push' : 'insert'](row);
        }.bind(this));
        if(!this.options.exactweeks) {
            var toFinish = 42 - this.cells.size(); 
            var wkstoFinish = Math.ceil(toFinish / 7);
            if(wkstoFinish > 0) { toFinish = toFinish / wkstoFinish; }
            $R(1,wkstoFinish).each(function(w){
                wk += 1;
                row = new Element(this.table ? 'tr' : 'div',{'class':'cal_week_' + wk}).addClassName('weekbox'); 
                $R(1,toFinish).each(function(i) {
                    var d = lastday.succ();
                    row.insert(this._buildDay(wk, d));
                    cal_weeks_wrapper[this.table ? 'push' : 'insert'](row);
                    lastday = d;
                }.bind(this));
            }.bind(this));
        }	
        return cal_weeks_wrapper;
    },
    _compareDates: function(date1,date2,type){
        return (this.indicators.indexOf(type) >= 0) ? false : Object.isUndefined(['getMonth','getDate','getFullYear'].find(function(n){ return date1[n]() != date2[n](); }));
    },
    _buildDay: function(week,day){
        this.dateRange.push(day);
        var cellid = 'cal_day_' + week + '_' + day.getDay();
        var cell = new Element(this.table ? 'td' : 'div',{'class':cellid});
        var celldate = new Element('div',{'class':cellid+'_date'}).addClassName('dayboxdate').update(this.options.daypadding ? ((day.getDate()).toPaddedString(2)) : day.getDate());
        var cellvalue = new Element('div',{'class':cellid+'_value'}).addClassName('dayboxvalue');
        if(this.options.planner) { this._updatePlanner(day,cellvalue); }
        cell.insert(celldate).insert(cellvalue).addClassName('daybox').addClassName('daybox'+ day.format('dddd').toLowerCase());
        // if we are on the currently selected date, set the class to dayselected (i.e. highlight it).
        if(this._compareDates(day,this.currentdate,'dayselected')) {
            cell.addClassName('dayselected');
            this.indicators.push('dayselected');
        }
        if(this._compareDates(day,new Date(),'today')) {
            cell.addClassName('today');
            this.indicators.push('today');
        }
        if(day.getDay() == 6) { cell.addClassName('endweek'); }
        // if we are outside the current month set the day style to 'deactivated'
        var cs = day.getMonth() != this.currentdate.getMonth() ? ['dayoutmonth','dayinmonth'] : ['dayinmonth','dayoutmonth'];
        cell.addClassName(cs[0]);
        if(cell.hasClassName(cs[1])) { cell.removeClassName(cs[1]); }
        this.cells.push(cell);
        return cell.observe('click', this._click.bindAsEventListener(this, this.cells.size() - 1));
    },
    _updateTitles: function() {
        var yr = this.currentdate.getFullYear();
        var mnth = this.currentdate.getMonth();
        var titles = {
            calprevmonth: Date.prototype.monthnames[(mnth - 1) == -1 ? 11 : mnth - 1],
            calprevyear: yr - 1,
            calnextyear: yr + 1,
            calnextmonth: Date.prototype.monthnames[(mnth + 1) == 12 ? 0 : mnth + 1]
        };
        this.controls.select('.calcontrol').each(function(ctrl) {
           var title = titles[ctrl.className.split(' ')[0]];
           if(!Object.isUndefined(title)) { ctrl.setAttribute('title',title); }
        });
    },
    _buildControls: function() {
        var hParts = [
            {p: 'calclose', u: this.options.closebutton, f:  this.toggleCalendar.bindAsEventListener(this)},
            {p: 'calprevmonth', u: this.options.prevbutton, f: this._switchCal.bindAsEventListener(this,'monthdown')},
            {p: 'calprevyear', u: this.options.yearprev, f: this._switchCal.bindAsEventListener(this,'yeardown')},
            {p: 'calnextmonth', u: this.options.nextbutton, f: this._switchCal.bindAsEventListener(this,'monthup')},
            {p: 'calnextyear', u: this.options.yearnext, f: this._switchCal.bindAsEventListener(this,'yearup')},
            {p: 'caltitle', u: this.currentdate.format(this.options.titleformat), f: this._switchCal.bindAsEventListener(this,'init')}
        ];
        if(this.table) { hParts = [hParts[1],hParts[2],hParts[5],hParts[3],hParts[4],hParts[0]]; }
        var cal_header = new Element(this.table ? 'tr' : 'div',{'class':'calheader'});
        hParts.each(function(part) {
            var el = new Element(this.table ? 'td' : 'div',{'class': part.p});
            if(part.p == 'caltitle') {
                this.title = el;
                if(this.table) { el.writeAttribute({colspan: 2}); }
                el.update(part.u).observe('click',part.f);
            } else {
                el.addClassName('calcontrol');
                el[typeof(part.u) == 'object' ? 'insert' : 'update'](part.u).observe('click',part.f);
            }
            cal_header.insert(el);
        }.bind(this));
        return cal_header;
    },
    _switchCal: function(){
        if(arguments[1]) {
            var event = arguments[0];
            var direction = arguments[1];
            event.date = this.currentdate;
        } else {
            var direction = arguments[0];
        }			
        var params = {f: 'setTime', p: this.initDate.getTime()};
        if(direction != 'init') {
            var d = this.currentdate[direction.include('month') ? 'getMonth' : 'getFullYear']();
            params = {f: direction.include('month') ? 'setMonth' : 'setYear', p: direction.include('up') ? d + 1 : d - 1};
        }
        this.currentdate[params.f](params.p);
        if(arguments[1]) { this.options.oncalchange(event); }
        this._update();
    }, 
    _update: function() {
        this._setCurrentDate(arguments[0] ? arguments[0] : this.currentdate);
        this.title.update(this.currentdate.format(this.options.titleformat));
        this._buildCal();
        this._updateTitles();
    },
    _setCurrentDate: function(date){
        this.currentdate = new Date(date.getFullYear(),date.getMonth(),date.getDate());
        this.firstofmonth = this.currentdate.firstofmonth();
        this.lastofmonth = this.currentdate.lastofmonth();
    },    
    _getCellIndexByDate: function(d) {
        var findDate = d.getTime();
        var cellIndex = 0;
        this.dateRange.each(function(dt,i) {
            if(dt.getTime() == findDate) {
                cellIndex = i;
                throw $break;
            }
        });
        return cellIndex;
    },
/*------------------------------- PUBLIC -------------------------------*/        
    destroy: function(){
        this._emptyCells();
        if(this.table) { 
            this.table.remove();
        } else {
            this.cal_weeks_wrapper.remove();
        }
		this.controls.descendants().invoke('stopObserving');
        [this.cal_wrapper,this.controls].invoke('remove');
    },
    setCurrentDate: function(direction){
        this[(direction instanceof Date) ? '_update' : '_switchCal'](direction);
        if(!arguments[1]) { this._updateExternal(); }
        return this.currentdate; 
    },
    toggleCalendar: function(){
        this.options[this.element.visible() ? 'closeeffect' : 'openeffect'](this.element, {duration: 0.5});
    },
    getElementByDate: function(d) {
        return this.cells[this._getCellIndexByDate(d)];
    },
    getElementsByWeek: function(week) {
        return this.element.select('.weekbox:nth-of-type(' + (week + 1) + ') .daybox:not(.dayboxname)');
    },
    getSelectedElement: function() {
        return this.element.select('.dayselected')[0];
    },
    getTodaysElement: function() {
        return this.element.select('.today')[0];
    },
    getDateByElement: function(element) {
        return this.dateRange[this.cells.indexOf(element)];
    },
/*------------------------------- PLUG-IN PLACEHOLDERS -------------------------------*/            
    _setupPlanner: Prototype.emptyFunction,
    _updatePlanner: Prototype.emptyFunction,
/*------------------------------- DEPRECATED -------------------------------*/            
    openCalendar: function(){ 
        if(!this.isOpen()){ this.toggleCalendar(); }
    },
    closeCalendar: function(){ 
        if(this.isOpen()){ this.toggleCalendar(); }
    },
    isOpen: function(){ 
        return this.element.visible();
    }
};

//Extend the scal library to add draggable calendar support.
//This script block can be added to the scal.js file.
Object.extend(scal.prototype,
{
    toggleCalendar: function()
    {
        var element = $(this.options.wrapper) || this.element;
        this.options[element.visible() ? 'onclose' : 'onopen'](element);
        this.options[element.visible() ? 'closeeffect' : 'openeffect'](element, {duration: 0.5});
    },

    isOpen: function()
    { 
        return ( $(this.options.wrapper) || this.element).visible();
    }
});

//this is a global variable to have only one instance of the calendar
var calendar = null;

//@element   => is the <div> where the calender will be rendered by Scal.
//@input     => is the <input> where the date will be updated.
//@container => is the <div> for dragging.
//@source    => is the img/button which raises up the calender, the script will locate the calenar over this control.
function showCalendar(element, input, container, source)            
{
    container = $(container);
    if (!calendar)
    {
        
        //the Draggable handle is hard coded to "rtop" to avoid other parameter.
        new Draggable(container, {handle: "rtop", starteffect: Prototype.emptyFunction, endeffect: Prototype.emptyFunction});
        
        //The singleton calendar is created.
        calendar = new scal(element, $(input), 
        {
            updateformat: 'yyyy/mm/dd', 
            closebutton: '&nbsp;', 
            wrapper: container
        }); 
    }
    else
    {
        calendar.updateelement = $(input);
    }

    var date = new Date($F(input));
    calendar.setCurrentDate(isNaN(date) ? new Date() : date);
    
    //Locates the calendar over the calling control  (in this example the "img").
    if (source)
    {   
      leftOffset = source.getWidth() + 5;
      container.clonePosition(source, {setWidth: false, setTop: true, setHeight: false, offsetLeft: leftOffset});
    }
    
    //finally show the calendar =)
    calendar.openCalendar();
};


var showCalendarFor = function(e, input)
{
    showCalendar("calendar", input, "calendar-container", $(input));
};
var hideCalendarFor = function(e)
{
  if(calendar) {
    calendar.closeCalendar();
  }
};

Event.observe(window, "load", function(e)
{
  $$('input:not([class~=toggle-calendar])', 'textarea', 'select').each(function(el) {
    Event.observe(el.identify(), "focus", hideCalendarFor.bindAsEventListener(this));
  });

  $$('.toggle-calendar').each(function(el) {
    Event.observe(el.identify(), "focus", showCalendarFor.bindAsEventListener(this, el.identify()));
  });            
});
/****************************************************************/
/*  original filename tabs.js                        */
/****************************************************************/


var Fabtabs = Class.create();

Fabtabs.prototype = {
  initialize : function(element) {
    this.element = $(element);
    var options = Object.extend({}, arguments[1] || {});
    links = $A(this.element.getElementsByTagName('a'));
    this.menu = links.reject(function(el) {
        el= $(el); // $() must be used for IE. Ticket #995
        return el.hasClassName('no-tab')
      })
    this.show(this.getInitialTab());
    this.menu.each(this.setupTab.bind(this));
  },
  
  setupTab : function(elm) {
    Event.observe(elm,'click',this.activate.bindAsEventListener(this),false)
  },
  
  activate :  function(ev) {
    var elm = Event.findElement(ev, "a");
    Event.stop(ev);
    this.show(elm);
    this.menu.without(elm).each(this.hide.bind(this));
  },
  
  hide : function(elm) {
    $(elm).removeClassName('active-tab');
    $(this.tabID(elm)).hide();
  },
  
  show : function(elm) {
    $(elm).addClassName('active-tab');
    $(this.tabID(elm)).show();
  },
  
  tabID : function(elm) {
    return elm.href.match(/#(\w.+)/)[1];
  },
  
  getInitialTab : function() {
    if(document.location.href.match(/#(\w.+)/)) {
      var loc = RegExp.$1;
      var elm = this.menu.find(function(value) { return value.href.match(/#(\w.+)/)[1] == loc; });
      var elm = elm || this.menu.find(function(value) { return value.hasClassName('initial') } )
      return elm || this.menu.first();
    } else {
      return this.menu.first();
    }
  }
}
/****************************************************************/
/*  original filename fingertips/readmore.js                        */
/****************************************************************/


var ReadMore = Class.create();
ReadMore.prototype = {
  initialize: function(container) {
    this.container = container;
    this.more_container = this.container.select('div div')[0];
    if (!this.more_container) return;
    
    // fix for #643
    var pTag = this.container.select('p').first();
    if (pTag)
    {
      pTag.insert({bottom: '<a href="#" class="show_more">[ more ]</a>'});
      this.more_link = this.container.select('a.show_more').first();
      this.more_link.observe('click', this.more.bindAsEventListener(this));
      
      this.container.select('p').last().insert({bottom: '<a href="#" class="show_less">[ show less ]</a>'});
      this.less_link = this.container.select('a.show_less').first();
      this.less_link.observe('click', this.less.bindAsEventListener(this));
      
      if (document.location.hash == '#more')
        this.more_link.hide();
      else
        this.more_container.hide();
    }
  },
  
  more: function(event) {
    new Effect.Parallel([
      new Effect.Appear(this.more_container, {from: 0.25, sync: true}),
      new Effect.BlindDown(this.more_container, {sync: true})
    ], {duration: .4});
    this.more_link.hide();
    this.less_link.show();
    document.location.hash = '#more';
    Event.stop(event);
  },
  
  less: function(event) {
    new Effect.Parallel([
      new Effect.Fade(this.more_container, {to: 0.25, sync: true}),
      new Effect.BlindUp(this.more_container, {sync: true})
    ], {duration: .4});
    this.more_link.show();
    this.less_link.hide();
    document.location.hash = '#less';
    Event.stop(event);
  }
};
/****************************************************************/
/*  original filename fingertips/graph.js                        */
/****************************************************************/


/*
 *  Some parts of this code are based on:
 *  Graph JavaScript framework, version 0.0.1
 *  (c) 2006 Aslak Hellesoy <aslak.hellesoy@gmail.com>
 *  (c) 2006 Dave Hoover <dave.hoover@gmail.com>
 *  Graph is freely distributable under the terms of an MIT-style license.
 *
/*--------------------------------------------------------------------------*/

function time(method){
  var then = (new Date()).getTime();
  method();
  var now = (new Date()).getTime();
  return now-then;
}

var AAC = {
    ANIMATION_DURATION: 10000, // Time of animation cycle in ms
    ANIMATION_FPS: 30, // Animation updates per sec
    ANIMATION_OFFSET: 7, // Animation offset length in px
    MOUSEOUT_DELAY: 250, // cloud tag: mouse out timeout delay in ms
    TAG_FADE_DURATION: 300, // cloud tag: mouse in/out animation duration in ms
    FADEIN_DURATION: 4 //fade in effect duration in sec
};
/* Calculated animation related constants */
AAC.ANIMATION_TIMEOUT = 1/AAC.ANIMATION_FPS;

AAC.Graph = Class.create({
  initialize: function(element, data){
    element = $(element);

    element.setStyle({visibility: 'hidden'});

    var graph = new AAC.Graph.GraphImpl(element);

    data.nodes.each(function(node){
      graph.addNode(node.id, node.label, node.className, node.url);
    });

    data.edges.each(function(edge){
      edge.slice(0,edge.length-1).each(function(node, index){
        graph.addEdge(edge[index], edge[index+1]);
      });
    });

    this.graph = graph;

    graph.nodes.each(function(node){
      var distance = graph.distance(graph.nodes.first().id, node.id);
      node.distance = distance;
    }, this);

    var firstNodeId = this.graph.nodes.first().id;

    this.layouter = new AAC.Graph.Layout.Spring(graph);
    this.layouter.layout(firstNodeId);
    this.renderer = new AAC.Graph.Renderer.Basic(element, graph);
    this.renderer.optimize(firstNodeId);

    element.setStyle({visibility: 'visible'});

    this.renderer.draw();

    //this.graph.element.observe('mousemove', this.hover.bind(this));
    //this.graph.element.observe('mouseout', this.out.bind(this));

    /* Initiating animation properies */
    graph.nodes.each(function(node){
      node._angle = Math.random()*2*Math.PI;
      node.angleIncrement = 2*Math.PI/(AAC.ANIMATION_DURATION/(AAC.ANIMATION_TIMEOUT*1000)) * (Math.random()+0.5) * ((Math.random() > 0.5) ? 1 : -1);
      node.value.childNodes[0].style.position = "relative"; // is needed to fly animation
      node.value.childNodes[0].observe('mouseover', this._over.bind(this));
      node.value.childNodes[0].observe('mouseout', this._out.bind(this));
      
      /* Safari rendering artifacts workaround */
      if (Prototype.Browser.WebKit) {
          node.value.style.opacity = "0.9999999";
          node.value.style.textShadow = "#000000 0 0 0px";
          node.value.childNodes[0].style.opacity = "0.9999999";
          node.value.childNodes[0].style.textShadow = "#000000 0 0 0px";
      }
    }, this);
    
    this.animationTimer = new PeriodicalExecuter(this.fly.bind(this), AAC.ANIMATION_TIMEOUT);
  },

  again: function(){
    var firstNodeId = this.graph.nodes.first().id;
    var layout = time(this.layouter.layout.bind(this.layouter, firstNodeId));
    var optimize = time(this.renderer.optimize.bind(this.renderer, firstNodeId));
    this.renderer.draw();

    $('info').innerHTML = 'layout: '+layout+'ms, optimizer: '+optimize+'ms';
  },

  explode: function(){
    this.renderer.explode();
  },

/*
  hover: function(event){
    var d = this.graph.element.viewportOffset(),
      p = [event.clientX-d[0]-(this.renderer.padding.left), event.clientY-d[1]-(this.renderer.padding.top)], w, h;
    this.graph.nodes.each(function(node){
      var a = (node.center[0]-p[0])*(node.center[0]-p[0]),
        b = (node.center[1]-p[1])*(node.center[1]-p[1]),
        distance = Math.sqrt(a.abs()+b.abs()) / 8;
      if(distance < 8) distance = 8;
      if(distance > 16) distance = 16;
      w = node.point[2]-node.point[0], h = node.point[3]-node.point[1];
      if(node.value._fs != (30-distance)) {
        node.value.setStyle('font-size:'+(30-distance)+'px');
        node.value.setStyle(
          'margin-top:'+((h-node.value.offsetHeight)/2).round()+'px;'+
          'margin-left:'+((w-node.value.offsetWidth)/2).round()+'px'
        );
        node.value._fs = 30-distance;
      }
    });
  },

  out: function(event){
    var t = event.relatedTarget || $(event.toElement);
    if(t && (t._graphElement || t==this.graph.element || (t.descendantOf && t.descendantOf(this.graph.element)))) {
      event.relatedTarget._graphElement = true;
      event.stop();
      return;
    }
    this.graph.nodes.each(function(node){
      node.value.morph('font-size:14px;margin-top:0px;margin-left:0px',{duration:.3});
    });
  },
  
*/
  
  /* Cloud tag mouse over handler */
  _over: function(event){
    var t = (event.srcElement) ? event.srcElement : event.target;
    if (t.tagName.toLowerCase() == "a")
        t = t.parentNode;

    if (t.timeout) {
        clearTimeout(t.timeout);
        t.timeout = null;
    }
    //offset to compensate font increase
    var offsetX = - Math.round(t.offsetWidth * 0.15);
    var offsetY = - Math.round(t.offsetHeight * 0.15);
    t.morph('font-size:20px;margin-top:' + offsetY +'px;margin-left:' + offsetX + 'px',{duration: AAC.TAG_FADE_DURATION/1000});
  },  

  /* Cloud tag mouse out handler */
  _out: function(event){
    var t = (event.srcElement) ? event.srcElement : event.target;
    if (t.tagName.toLowerCase() == "a")
        t = t.parentNode;
    
    t.timeout = setTimeout("if($('" + t.id + "')) $('" + t.id + "').morph('font-size:14px;margin-top:0px;margin-left:0px',{duration:" + AAC.TAG_FADE_DURATION/1000 + "})", AAC.MOUSEOUT_DELAY);
  },  
  
  /* Cloud animation renderer */
  fly: function(event){
    try {
        var offset = AAC.ANIMATION_OFFSET;

        this.graph.nodes.each(function(node){
            var angle = (node._angle + node.angleIncrement)%(2*Math.PI);
            var offsetX = offset*Math.cos(angle) - offset;
            var offsetY = offset*Math.sin(angle) - offset;
            var link = node.value.childNodes[0];
            var x = offsetX + "px";
            var y = offsetY + "px";

            if (link.style.left != x) link.style.left = x;
            if (link.style.top != y) link.style.top = y;

            // current node animation phase
            node._angle = angle;
        });
    } catch(e) {
        // graph is deleted, but loop is continues
    }
  }  
});

AAC.Graph.GraphImpl = Class.create({
  initialize: function(element) {
    this.element = $(element);
    this.nodeSet = {};
    this.nodes = [];
    this.edges = [];
    this.edgeCache = [];
  },

  addNode: function(id, value, className, href) {
    var element = (new Element('div',{
      id: this.element.identify()+'_'+id,
      className: className
    })).update((new Element('a',{ href:href })).update(value));

    this.element.insert(element);

    var node = new AAC.Graph.Node(id, element);
    node.width = element.offsetWidth;
    node.height = element.offsetHeight;
    this.nodeSet[id] = node;
    this.nodes.push(node);
    return node;
  },

  findNode: function(id){
    return this.nodeSet[id];
  },

  addEdge: function(source, target) {
    var s = this.findNode(source);
    var t = this.findNode(target);
    var edge = {source: s, target: t};
    this.edges.push(edge);
    this.edgeCache.push([source, target].sort());
  },

  distance: function(source, target, start, level) {
    if(start && (start == source || start == target)) return NaN;
    if(level++ > 5) return NaN;

    if(!start) start = target;
    var pair = [source, target].sort();

    // same node
    if(source == target) return 0;

    // direct link
    if(this.edgeCache.detect(function(edge){
      return edge[0]==pair[0] && edge[1] == pair[1];
    })) {
      return 1;
    } else {
      // search through paths
      var paths = this.edgeCache.select(function(edge){
        return edge[0]==target || edge[1]==target;
      }).map(function(e){
        return 1 + this.distance(source, e[0]==target ? e[1] : e[0], start, level || 0);
      }, this);

      return paths.min();
    }
  }
});

AAC.Graph.Node = Class.create({
  initialize: function(id, value) {
    this.id = id;
    this.value = value;
  }
});

AAC.Graph.Renderer = {};
AAC.Graph.Renderer.Basic = Class.create({
  initialize: function(element, graph) {
    this.element = $(element);
    this.graph = graph;

    var dims = this.element.getDimensions();

    /* Few cloud tags workround - shrinking graph canvas */
    var offsetX = 2*AAC.ANIMATION_OFFSET;
    var offsetY = 2*AAC.ANIMATION_OFFSET;
    offsetX += ((this.graph.nodes.length == 2) ? dims.width/3.5 : 0);
    offsetY += ((this.graph.nodes.length == 2) ? dims.height/4 : 0);
    offsetY = ((this.graph.nodes.length == 1) ? -dims.height/6 : offsetY);

    this.padding = {
      left: (parseInt(element.getStyle('padding-left') || 0) + offsetX),
      top:  (parseInt(element.getStyle('padding-top') || 0) + offsetY)
    };

    this.dims = {
      width: dims.width - (this.padding.left + parseInt(element.getStyle('padding-right') || 0) + offsetX),
      height: dims.height - (this.padding.top + parseInt(element.getStyle('padding-bottom') || 0) + offsetY)
    };

    this.radiusX = 150;
    this.radiusY = 30;

    this.factorX = (this.dims.width  - 2 * this.radiusX) / (graph.layoutMaxX - graph.layoutMinX);
    this.factorY = (this.dims.height - 2 * this.radiusY) / (graph.layoutMaxY - graph.layoutMinY);
  },

  translate: function(node) {
    var arr = [
      ((node.layoutPosX - this.graph.layoutMinX) * this.factorX + this.radiusX),
      ((node.layoutPosY - this.graph.layoutMinY) * this.factorY + this.radiusY)
    ];
    arr.push(arr[0] + node.value.offsetWidth);
    arr.push(arr[1] + node.value.offsetHeight);
    return arr;
  },

  remap: function(node) {
    node.point = this.translate(node);
  },

  optimize: function(firstNodeId){
    var dims, scale, l, t, o1, o2, dx, dy, node2, i, node1;
    this.graph.nodes.each(this.remap, this);

    // iterate so nodes are nicely aligned
    var iterations = 20;
    while(iterations--) {
      var j = this.graph.nodes.length;
      while(j--) {
        i = this.graph.nodes.length;
        node1 = this.graph.nodes[j];
        while(i--) {
          node2 = this.graph.nodes[i];
          if(!(node1.id == node2.id)) {

            o1 = node1.point; o2 = node2.point;
            // check if nodes overlap
            if((o1[0]>=o2[0] && o1[0]<=o2[2] && o1[1]>=o2[1] && o1[1]<=o2[3]) ||
               (o1[2]>=o2[0] && o1[2]<=o2[2] && o1[3]>=o2[1] && o1[3]<=o2[3]) ||
               (o1[0]>=o2[0] && o1[2]<=o2[2] && o1[1]>=o2[1] && o1[3]<=o2[3]) ||
               (o1[2]>=o2[0] && o1[0]<=o2[2] && o1[3]>=o2[1] && o1[1]<=o2[3])) {

              // calculate mid-point delta, leave a little margin
              dx = (((o2[0]+o2[2]/2) - (o1[0]+o1[2]/2))/2) * 1.05;
              dy = (((o2[1]+o2[3]/2) - (o1[1]+o1[3]/2))/2) * 1.05;

              // move nodes in direction of delta
              // don't move first node so it stays centered
              if(node1.id == firstNodeId){
                o2[0] += dx*2; o2[1] += dy*2;
                o2[2] += dx*2; o2[3] += dy*2;
              } else if(node2.id == firstNodeId){
                o1[0] -= dx*2; o1[1] -= dy*2;
                o1[2] -= dx*2; o1[3] -= dy*2;
              } else {
                o1[0] -= dx; o1[1] -= dy;
                o1[2] -= dx; o1[3] -= dy;
                o2[0] += dx; o2[1] += dy;
                o2[2] += dx; o2[3] += dy;
              }
            }
          }
        }
      };
      dims = [
        this.graph.nodes.map(function(n){ return n.point[0] }).min(),
        this.graph.nodes.map(function(n){ return n.point[1] }).min(),
        this.graph.nodes.map(function(n){ return n.point[2] }).max(),
        this.graph.nodes.map(function(n){ return n.point[3] }).max()
      ];
      scale = [
        this.dims.width / (dims[2] - dims[0]),
        this.dims.height / (dims[3] - dims[1])
      ];
      this.graph.nodes.each(function(node){
        var center = [
          node.point[0] + ((node.point[2] - node.point[0])/2),
          node.point[1] + ((node.point[3] - node.point[1])/2)
        ];
        l = (center[0] * scale[0]).round();
        t = (center[1] * scale[1]).round();
        node.point[0] = l - (node.width/2);
        node.point[1] = t - (node.height/2);
        node.point[2] = l + (node.width/2);
        node.point[3] = t + (node.height/2);
      });
    }

    // shift stuff around so it fits better
    var iterations = 5;
    while(iterations--) {
      dims = [
        this.graph.nodes.map(function(n){ return n.point[0] }).min(),
        this.graph.nodes.map(function(n){ return n.point[1] }).min(),
        this.graph.nodes.map(function(n){ return n.point[2] }).max(),
        this.graph.nodes.map(function(n){ return n.point[3] }).max()
      ];
      scale = [
        this.dims.width / (dims[2] - dims[0]),
        this.dims.height / (dims[3] - dims[1])
      ];
      this.graph.nodes.each(function(node){
        var center = [
          node.point[0] + ((node.point[2] - node.point[0])/2),
          node.point[1] + ((node.point[3] - node.point[1])/2)
        ];
        l = (center[0] * scale[0]).round();
        t = (center[1] * scale[1]).round();
        node.point[0] = l - (node.width/2);
        node.point[1] = t - (node.height/2);
        node.point[2] = l + (node.width/2);
        node.point[3] = t + (node.height/2);
      });
    }

    // center the graph in the element
    var dims = [
      this.graph.nodes.map(function(n){ return n.point[0] }).min(),
      this.graph.nodes.map(function(n){ return n.point[1] }).min()
    ];
    this.graph.nodes.each(function(node,index){
      node.point[0] -= dims[0];
      node.point[1] -= dims[1];
      node.point[2] -= dims[0];
      node.point[3] -= dims[1];
      node.center = [
        node.point[0] + ((node.point[2] - node.point[0])/2),
        node.point[1] + ((node.point[3] - node.point[1])/2)
      ];
    });
  },

  draw: function() {
    this.graph.nodes.each(this.drawNode, this);
  },

  drawNode: function(node) {
    if(!node.rendered){
      node.value.setStyle(
        'top:'+((this.element.offsetHeight/2-node.value.offsetHeight/2)+this.padding.top)+'px;'+
        'left:'+((this.element.offsetWidth/2-node.value.offsetWidth/2)+this.padding.left)+'px'
      );
      node.rendered = true;
    }

    node.value.morph(
      'top:'+(node.point[1]+this.padding.top)+
      'px;left:'+(node.point[0]+this.padding.left)+'px',{
      // fade in speed
      duration: AAC.FADEIN_DURATION + (node.distance/2),
//      duration: 1+(node.distance/2),
      transition: Effect.Transitions.spring
    });
  },

  explode: function(){
    this.graph.nodes.each(function(node){
      var p0 = (node.point[0]-this.dims.width/2) * 5,
          p1 = (node.point[1]-this.dims.height/2) * 5;
      p0 = p0.abs() < this.dims.width*2 ? (p0<0 ? -this.dims.width*2 : this.dims.width*2) : p0;
      p1 = p1.abs() < this.dims.height*2 ? (p1<0 ? -this.dims.height*2 : this.dims.height*2) : p1;
      node.value.morph('left:'+(p0+this.padding.left)+'px;top:'+(p1+this.padding.top)+'px',{
        duration: .5,
        transition: function(p){ return p*p; }
      });
    }, this);
  }
});

AAC.Graph.Layout = {};
AAC.Graph.Layout.Spring = Class.create({
  initialize: function(graph) {
    this.graph = graph;
    this.iterations = 350;
    this.maxRepulsiveForceDistance = 10;
    this.k = 2.5;
    this.k2 = this.k * this.k;
    this.c = 0.025;
    this.maxVertexMovement = 0.5;
  },

  layout: function(firstNodeId) {
    this.layoutPrepare();

    for (var i = 0; i < this.iterations; i++)
      this.layoutIteration(firstNodeId);

    this.layoutCalcBounds();
  },

  layoutPrepare: function() {
    this.graph.nodes.each(function(node){
      node.layoutPosX = 0.5;
      node.layoutPosY = 0.5;
      node.layoutForceX = 0;
      node.layoutForceY = 0;
    });
  },

  layoutCalcBounds: function() {
    var minx = Infinity, maxx = -Infinity, miny = Infinity, maxy = -Infinity;

    for (var i = 0; i < this.graph.nodes.length; i++) {
      var x = this.graph.nodes[i].layoutPosX,
          y = this.graph.nodes[i].layoutPosY;

      if(x > maxx) maxx = x;
      if(x < minx) minx = x;
      if(y > maxy) maxy = y;
      if(y < miny) miny = y;
    }

    this.graph.layoutMinX = minx;
    this.graph.layoutMaxX = maxx;
    this.graph.layoutMinY = miny;
    this.graph.layoutMaxY = maxy;
  },

  // optimized
  layoutIteration: function(firstNodeId) {
    var node, node1, edge, xmove, ymove,
      max = this.maxVertexMovement,
      gn = this.graph.nodes, ge = this.graph.edges,
      gnl = gn.length, i, j, c = this.c, k = this.k,
      k2 = this.k2, attractiveForce,
      mRFD = this.maxRepulsiveForceDistance,
      dx, dy, d2, d, repulsiveForce, dxd, dyd;

    for (i = 0; i < gnl; i++) {
      node1 = gn[i];
      for (j = i + 1; j < gnl; j++) {
        node2 = gn[j];

        dx = node2.layoutPosX - node1.layoutPosX;
        dy = node2.layoutPosY - node1.layoutPosY;
        d2 = dx * dx + dy * dy;

        if(d2 < 0.01) {
          dx = 0.1 * Math.random() + 0.1;
          dy = 0.1 * Math.random() + 0.1;
          d2 = dx * dx + dy * dy;
        }
        d = Math.sqrt(d2);

        if(!(d < mRFD)) return;

        repulsiveForce = k2 / d;
        dxd = dx / d; dyd = dy / d;
        if(node2.id != firstNodeId){
          node2.layoutForceX += repulsiveForce * dxd;
          node2.layoutForceY += repulsiveForce * dyd;
        }
        if(node1.id != firstNodeId){
          node1.layoutForceX -= repulsiveForce * dxd;
          node1.layoutForceY -= repulsiveForce * dyd;
        }
      }
    }

    i = ge.length;
    while(i--) {
      node1 = ge[i].source;
      node2 = ge[i].target;
      dx = node2.layoutPosX - node1.layoutPosX;
      dy = node2.layoutPosY - node1.layoutPosY;
      d2 = dx * dx + dy * dy;

      if(d2 < 0.01) {
        dx = 0.1 * Math.random() + 0.1;
        dy = 0.1 * Math.random() + 0.1;
        d2 = dx * dx + dy * dy;
      }

      d = Math.sqrt(d2);
      if(d > mRFD) {
        d = mRFD;
        d2 = d * d;
      }

      attractiveForce = (d2 - k2) / k;
      if(ge[i].weight == undefined || ge[i].weight < 1) ge[i].weight = 1;
      attractiveForce *= Math.log(ge[i].weight) * 0.5 + 1;
      if(node2.id != firstNodeId){
        node2.layoutForceX -= attractiveForce * dx / d;
        node2.layoutForceY -= attractiveForce * dy / d;
      }
      if(node1.id != firstNodeId){
        node1.layoutForceX += attractiveForce * dx / d;
        node1.layoutForceY += attractiveForce * dy / d;
      }

    }

    i = gnl;
    while(i--) {
      node = gn[i];
      xmove = c * node.layoutForceX;
      ymove = c * node.layoutForceY;

      xmove = xmove > max ? max : xmove < -max ? -max : xmove;
      ymove = ymove > max ? max : ymove < -max ? -max : ymove;

      node.layoutPosX += xmove;
      node.layoutPosY += ymove;
      node.layoutForceX = 0;
      node.layoutForceY = 0;
    }
  }
});
/****************************************************************/
/*  original filename fingertips/graph_loader.js                        */
/****************************************************************/


var GraphLoader = {
  load: function(element, link) {
    if (link.up('li').hasClassName('active')) {
      //window.location = link.href;
      return;
    } else {
      link.up('ul').select('li').each(function(link) {
        link.removeClassName('active');
      });
      link.up('li').addClassName('active');

      if (document.graph) {
        document.graph.explode();
        document.graph.animationTimer.stop();
      }


      new Ajax.Request('/cloud_js', {
        parameters: link.rel.evalJSON(),
        evalJSON: true,
        onSuccess: function(transport) {
          if (document.graph) {
            $(element).update('');
          }
          document.graph = new AAC.Graph(element, transport.responseJSON);
        }
      });
    }
  }
};

function graphObjectChanged(event) {
  GraphLoader.load('graph', this);
  Event.stop(event);
}

function loadGraphFor(useID, userType)
{
    new Ajax.Request('/cloud_js', {
        parameters: {item_id: useID, item_ident: "cloud_user_" + useID, item_type: userType},
        evalJSON: true,
        onSuccess: function(transport) {
          $('graph').update('');
          new AAC.Graph('graph', transport.responseJSON);
        }
      });
}
/****************************************************************/
/*  original filename register.js                        */
/****************************************************************/


/**
 * @author dryan
 */
LIMIT = 10;
added_artists 	= new Hash();
added_movements = new Hash();
added_themes 	= new Hash();
added_tags   	= new Hash();
added_active    = new Hash();
var Added 			= Class.create();

Added.prototype = {
	initialize: function(id, name) {
		this.id = id;
		this.name = name;
	}
};

function toggle_lists(){
	$('featured_list').toggle();
	$('full_list').toggle();
	$('click_full').toggle();
	$('click_featured').toggle();
	$('recommended_text').toggle();
	$('full_text').toggle();
}

function checkbox_active(id, name){
	if($F('active_'+id)) {
		add_active(id, name);
	} else {
		remove_active(id);
	}	
}
function checkbox_artist(id, name){
	if($F('artist_'+id)) {
		add_artist(id, name);
	} else {
		remove_artist(id);
	}
}

function checkbox_movement(id, name){
	if($F('movement_'+id)) {
		add_movement(id, name);
	} else {
		remove_movement(id);
	}
}

function checkbox_theme(id, name){
	if($F('theme_'+id)) {
		add_theme(id, name);
	} else {
		remove_theme(id);
	}
}

function checkbox_tag(id, name){
	if($F('tag_'+id)) {
		add_tag(id, name);
	} else {
		remove_tag(id);
	}
}

function add_artist(id, name) {
	if(added_artists.keys().length < LIMIT) {
		var data = new Added(id, name);
		added_artists.set(id, data);
		update_add_list();
	} else {
		uncheck_box(id, 'artist');
		limit_message("Artists");
	}
}

function remove_artist(id){
	added_artists.unset(id);
	uncheck_box(id, 'artist');
	update_add_list();
}

function add_active(id, name) {
	if(added_active.keys().length < LIMIT) {
		var data = new Added(id, name);
		added_active.set(id, data);
		update_active_list();
	} else {
		uncheck_box(id, 'active');
		limit_message("Active");
	}
}


function remove_active(id){
	added_active.unset(id)
	uncheck_box(id, 'active');
	update_active_list();
}


function add_movement(id, name) {
	if(added_movements.keys().length < LIMIT) {
		var data = new Added(id, name);
		added_movements.set(id, data);
		update_add_list();
	} else {
		uncheck_box(id, 'movement');
		limit_message("Movements");
	}
}

function remove_movement(id){
	added_movements.unset(id)
	uncheck_box(id, 'movement');
	update_add_list();
}

function add_theme(id, name) {
	if(added_themes.keys().length < LIMIT) {
		var data = new Added(id, name);
		added_themes.set(id, data);
		update_theme_list();
	} else {
		uncheck_box(id, 'theme');
		limit_message("Themes");
	}
}

function remove_theme(id) {
	added_themes.unset(id);
	uncheck_box(id, 'theme');
	update_theme_list();
}

function add_tag(id, name) {
	if(added_tags.keys().length < LIMIT) {
		var data = new Added(id, name);
		added_tags.set(id, data);
		update_tag_list();
	} else {
		uncheck_box(id, 'tag');
		limit_message("Tags");
	}
}

function remove_tag(id) {
	added_tags.unset(id);
	uncheck_box(id, 'tag');
	update_tag_list();
}

function limit_message(type){
	alert("Please only add up to 10 " + type + " at this time.  You can add more from your dashboard after registration has been completed.")
}

function uncheck_box(id, type){
	if($F(type+'_'+id)){
		$(type+'_'+id).checked = false;
	}
}

function update_add_list(){
	$('added_connections').update('');
	added_artists.each(function add_artist_div(data) {
		var div = getDomElement(data, 'artist');
		$('added_connections').insert(div);
	});
	
	added_movements.each(function add_movement_div(data, index) {
		var div = getDomElement(data, 'movement');
		$('added_connections').insert(div);
	});
	

		
	Form.Element.setValue('artists_list', added_artists.keys().join(','));
	Form.Element.setValue('movements_list', added_movements.keys().join(','));
	
}

function update_active_list(){
	$('added_active').update('');
	added_active.each(function add_active_div(data, index) {
		var div = getDomElement(data, 'active');
		$('added_active').insert(div);		
	});	
	Form.Element.setValue('active_list', added_active.keys().join(','));	
}

function update_theme_list(){
	$('added_themes').update('');
	added_themes.each(function add_theme_div(data) {
		var div = getDomElement(data, 'theme');
		$('added_themes').insert(div);
	});
	Form.Element.setValue('themes_list', added_themes.keys().join(','));
}

function update_tag_list(){
	$('added_tags').update('');
	added_tags.each(function add_tag_div(data) {
		var div = getDomElement(data, 'tag');
		$('added_tags').insert(div);
	});
	Form.Element.setValue('tags_list', added_tags.keys().join(','));
}

function getDomElement(data, type){
	var div = new Element('div', {'class':'item'});
	var a = new Element('a', {'id': data.value.id, 'onclick':'remove_'+type+'('+data.value.id+')'}).update('[x] ');
	div.insert(a.insert(data.value.name));
	return div
}

/* Signup form functions */

document.observe("dom:loaded", function() {
	if($('signup_form')){
		Event.observe('signup_form', 'submit', checkform);
		$('register_submit').enable();
	}
});


function checkform(event) {
	hideAll();
	
	var current = $('user_login');
	//check username
	if(current.value.blank()){
		addErrorClass(current);
		Effect.Appear('username_error', {duration:0.5});
		event.stop();
	}
	if(current.value.length < 5){
		addErrorClass(current);
		Effect.Appear('username_length_error', {duration:0.5});
		event.stop();
	}
	
	//check email
	current = $('user_email');
	if(current.value.blank()){
		addErrorClass(current);
		Effect.Appear('email_error', {duration:0.5});
		event.stop();
	}
	if(!validEmail(current.value)){
		addErrorClass(current);
		Effect.Appear('email_format_error', {duration:0.5});
		event.stop();
	}
	//check email confirm
	current = $('user[email_confirmation]');
	if(current.value.blank()){
		addErrorClass(current);
		Effect.Appear('email_confirm_error', {duration:0.5});
		event.stop();
	}
	
	//check email matches email confirm
	if($('user_email').value != $('user[email_confirmation]').value){
		addErrorClass($('user_email'));
		addErrorClass($('user[email_confirmation]'));
		Effect.Appear('email_match_confirm_error', {duration:0.5});
		event.stop();
	}
	
	//check password
	current = $('user_password');
	if(current.value.blank()){
		addErrorClass(current);
		Effect.Appear('password_error', {duration:0.5});
		event.stop();
	}
	if(current.value.length < 5){
		addErrorClass(current);
		Effect.Appear('password_length_error', {duration:0.5});
		event.stop();
	}
	
	//check password confirm
	current = $('user[password_confirmation]');
	if(current.value.blank()){
		addErrorClass(current);
		Effect.Appear('password_confirm_error', {duration:0.5});
		event.stop();
	}
	
	//check captcha
	current = $('user_captcha');
	if(current.value.blank()){
		addErrorClass(current);
		Effect.Appear('captcha_error', {duration:0.5});
		event.stop();
	}
	
	if(!$F('user_terms_of_service')) {
		Effect.Appear('tos_error', {duration:0.5});
		event.stop();
	}
	
}

function validEmail(email){
	email = email.toLowerCase().strip();
	return (email.search(/^([a-z]+)([a-z0-9\-\_\.]{1,100})([a-z0-9]+)\@([a-z0-9]+)([a-z0-9\-\.]*)([a-z0-9]+)\.([a-z]{2,6})$/) != -1);
}

function hideAll(){
	$('email_error').hide();
	$('email_confirm_error').hide();
	$('password_error').hide();
	$('password_length_error').hide();
	$('password_confirm_error').hide();
	removeAllErrorClass();
}

function removeAllErrorClass(){
	$('user_email').removeClassName('error_input');
	$('user[email_confirmation]').removeClassName('error_input');
	$('user_password').removeClassName('error_input');
	$('user[password_confirmation]').removeClassName('error_input');
}

function addErrorClass(element){
	element.addClassName('error_input');
}
/****************************************************************/
/*  original filename questions.js                        */
/****************************************************************/


effect_duration = 0.17
function view(id){
	Effect.BlindDown(id, { duration: effect_duration });
	$('answer_button').onclick = "return false";
	return false;
}
	
function view_answers(){
	$('view_other_link').hide();
	$('hide_other_link').show();
	Effect.BlindDown('other_answers', { duration: effect_duration});
}
	
function hide_answers(id) {
	$('hide_other_link').hide();
	$('view_other_link').show();
	Effect.BlindUp('other_answers', { duration: effect_duration });
	return false;
}
	
function show_answers(){
	$('view_other_link').hide();
	$('hide_other_link').show();
	$('other_answers').show();
	return false;
}

function answer(id){
  Effect.BlindDown(id, { duration: effect_duration});	
}

if($('post_update_button')){
	Event.observe('post_update_button', 'click', show_answers);
}


/****************************************************************/
/*  original filename browse_artists.js                        */
/****************************************************************/


/*
 * Browse Artists JS functionality
 *
 */


function browse_artists_view_by() {
    if (this.hasClassName('selected'))
        return;

    this.parentNode.childElements().invoke('removeClassName', 'selected');
    this.addClassName('selected');

    disc_el = this.up('.discipline_row');
    disc_el.down('.items_matrix').innerHTML = request_spinner_image;
    disc_el.down('.items_matrix').up().setAttribute('page_num', 1);
    disc_el.down('.arrow_left').removeClassName('activated');

    new Ajax.Request('/browse_artists/update_oneroot',
                     { parameters: { view_by: this.id,
                                     disc_id: disc_el.id }
                     }
                    )
}


function browse_artists_page(delta) {
    disc_el = this.up('.discipline_row');
    matrix_wrapper = disc_el.down('.items_matrix').up();

    p_num = parseInt(matrix_wrapper.getAttribute("page_num")) + delta;
    p_max = parseInt(matrix_wrapper.getAttribute("page_max"));
    view_by = disc_el.down(".sub_link .selected")

    if (p_num > 1) {
        disc_el.down('.arrow_left').addClassName('activated');
    }
    else {
        disc_el.down('.arrow_left').removeClassName('activated');
    }

    if (p_num < p_max) {
        disc_el.down('.arrow_right').addClassName('activated');
    }
    else {
        disc_el.down('.arrow_right').removeClassName('activated');
    }

    if (p_num < 1 || p_num > p_max) {
        return;
    }


    disc_el.down('.items_matrix').innerHTML = request_spinner_image;

    new Ajax.Request('/browse_artists/update_oneroot',
                     { parameters: { view_by: view_by.id,
                                     page_num: p_num,
                                     disc_id: disc_el.id }
                     }
                    )

    matrix_wrapper.setAttribute('page_num', p_num);
}

function browse_artists_expand_seemore_span() {
    $$('span.more_tags').invoke('removeClassName', 'collapsed');
    this.addClassName('collapsed');
}
/****************************************************************/
/*  original filename WebEvent.js                        */
/****************************************************************/


<!--
cy = new Object();

cy.documentdomain=window.document.domain;
cy.locationpathname=window.location.pathname;
cy.documentreferrer=window.document.referrer;
cy.PageName="";
cy.FunnelLevel="0";
cy.Section="";
cy.UserId="";
cy.Product="";
cy.Quantity=0;
cy.Value=0.0;
cy.Custom1="";
cy.Custom2="";
cy.Custom3="";
cy.Custom4="";
cy.CustomerCode='2507056705';

function cy_getCookie(c_name, suffix_allowed)
{
   // Search case-insensitive
   if (document.cookie.length>0)
   {
    if (suffix_allowed == false)
    {
       // Look for a complete word match
        c_start = document.cookie.toLowerCase().indexOf(c_name.toLowerCase() + "=");
        
        if (c_start != -1)
        { 
            c_start = c_start + c_name.length + 1; 
           c_end = document.cookie.indexOf(";", c_start);
           
           if (c_end == -1)
          {
             c_end = document.cookie.length;
          }
       
           return decodeURIComponent(document.cookie.substring(c_start, c_end));
        }
    }
    else
    {
       // Look for a partial word match
         regexp = c_name.toLowerCase() + "(.*)=";
                 
        c_start = document.cookie.toLowerCase().search(regexp);

         if (c_start != -1)
        {
          // create new string with our search criteria at the beginning
            s1 = document.cookie.slice(c_start);
           
           // Search from the beginning of this new string for "="
           c_start = s1.indexOf("=") +1;

            if (c_start != -1)   // overkill
            {
             c_end = s1.indexOf(";");
   
              if (c_end == -1)
             {
                c_end = s1.length;
              }

               return decodeURIComponent(s1.substring(c_start, c_end));
            }
       }
    }
    
  }
 
  return "";
}

function cy_getImageSrc()
{
 var protocol;
 var port;
  var swd='abandonment.saas.seewhy.com';
 var path='/abandonment/WE/seewhy.gif';
 var ssl = window.location.protocol.toLowerCase().indexOf('https') >= 0;
 if (ssl)
   {
    protocol='https';
    port=8443;
 }
 else
 {
    protocol='http';
     port=8080;
 }
 var swi = protocol+'://'+swd+':'+port+path;
   var rn = Math.random();

  if (cy.SessionID == null)
 {
	var sessionId = cy_getCookie("ac_session", false);
	if (sessionId == "") 
	{
       sessionId = cy_getCookie("JSESSIONID", false);
    }
    if (sessionId == "")
    {
       sessionId = cy_getCookie("ASPSESSIONID", true);
    }
    if (sessionId == "")
    {
       sessionId = cy_getCookie("PHPSESSID", false);
    }
    if (sessionId == "")
    {
       sessionId = cy_getCookie("ASP.NET_SessionId", false);
    }
    if (sessionId == "")
    {
       sessionId = cy_getCookie("sid", false);
      }
    if (sessionId == "")
    {
       sessionId = cy_getCookie("SESS", true);
      }
 }
 else
 {
    sessionId = cy.SessionID;
 }

   var queryString="?Event=WebEvent"+
        "&CustomerCode=" +cy.CustomerCode+
        "&Server=" +cy.documentdomain+
         "&DefaultPageName=" +cy.locationpathname+
       "&Referrer=" +cy.documentreferrer+
        "&SessionID=" +sessionId+
        "&FunnelLevel=" +cy.FunnelLevel+
       "&Section=" +cy.Section+
         "&UserId=" +cy.UserId+
        "&Product=" +cy.Product+
         "&Quantity=" +cy.Quantity+
       "&Value=" +cy.Value+
       "&Custom1=" +cy.Custom1+
         "&Custom2=" +cy.Custom2+
         "&Custom3=" +cy.Custom3+
         "&Custom4=" +cy.Custom4+
         "&PageName=" +cy.PageName;

   src = swi+"/"+rn+queryString;

   document.getElementById("cy_image").src=src;
}
// Version 1.4
//-->

/****************************************************************/
/*  original filename anylink/anylinkcssmenu.js                        */
/****************************************************************/


//** AnyLink CSS Menu v2.0- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com
//** Script Download/ instructions page: http://www.dynamicdrive.com/dynamicindex1/anylinkcss.htm
//** January 19', 2009: Script Creation date

//**May 23rd, 09': v2.1
	//1) Automatically adds a "selectedanchor" CSS class to the currrently selected anchor link
	//2) For image anchor links, the custom HTML attributes "data-image" and "data-overimage" can be inserted to set the anchor's default and over images.

//**June 1st, 09': v2.2
	//1) Script now runs automatically after DOM has loaded. anylinkcssmenu.init) can now be called in the HEAD section

if (typeof dd_domreadycheck=="undefined") //global variable to detect if DOM is ready
	var dd_domreadycheck=false

var anylinkcssmenu={

menusmap: {},
preloadimages: [],
effects: {delayhide: 200, shadow:{enabled:true, opacity:0.3, depth: [5, 5]}, fade:{enabled:true, duration:500}}, //customize menu effects

dimensions: {},

getoffset:function(what, offsettype){
	return (what.offsetParent)? what[offsettype]+this.getoffset(what.offsetParent, offsettype) : what[offsettype]
},

getoffsetof:function(el){
	el._offsets={left:this.getoffset(el, "offsetLeft"), top:this.getoffset(el, "offsetTop"), h: el.offsetHeight}
},

getdimensions:function(menu){
	this.dimensions={anchorw:menu.anchorobj.offsetWidth, anchorh:menu.anchorobj.offsetHeight,
		docwidth:(window.innerWidth ||this.standardbody.clientWidth)-20,
		docheight:(window.innerHeight ||this.standardbody.clientHeight)-15,
		docscrollx:window.pageXOffset || this.standardbody.scrollLeft,
		docscrolly:window.pageYOffset || this.standardbody.scrollTop
	}
	if (!this.dimensions.dropmenuw){
		this.dimensions.dropmenuw=menu.dropmenu.offsetWidth
		this.dimensions.dropmenuh=menu.dropmenu.offsetHeight
	}
},

isContained:function(m, e){
	var e=window.event || e
	var c=e.relatedTarget || ((e.type=="mouseover")? e.fromElement : e.toElement)
	while (c && c!=m)try {c=c.parentNode} catch(e){c=m}
	if (c==m)
		return true
	else
		return false
},

setopacity:function(el, value){
	el.style.opacity=value
	if (typeof el.style.opacity!="string"){ //if it's not a string (ie: number instead), it means property not supported
		el.style.MozOpacity=value
		if (el.filters){
			el.style.filter="progid:DXImageTransform.Microsoft.alpha(opacity="+ value*100 +")"
		}
	}
},

showmenu:function(menuid){
	var menu=anylinkcssmenu.menusmap[menuid]
	clearTimeout(menu.hidetimer)
	this.getoffsetof(menu.anchorobj)
	this.getdimensions(menu)
	var posx=menu.anchorobj._offsets.left + (menu.orientation=="lr"? this.dimensions.anchorw : 0) //base x pos
	var posy=menu.anchorobj._offsets.top+this.dimensions.anchorh - (menu.orientation=="lr"? this.dimensions.anchorh : 0)//base y pos
	if (posx+this.dimensions.dropmenuw+this.effects.shadow.depth[0]>this.dimensions.docscrollx+this.dimensions.docwidth){ //drop left instead?
		posx=posx-this.dimensions.dropmenuw + (menu.orientation=="lr"? -this.dimensions.anchorw : this.dimensions.anchorw)
	}
	if (posy+this.dimensions.dropmenuh>this.dimensions.docscrolly+this.dimensions.docheight){  //drop up instead?
		posy=Math.max(posy-this.dimensions.dropmenuh - (menu.orientation=="lr"? -this.dimensions.anchorh : this.dimensions.anchorh), this.dimensions.docscrolly) //position above anchor or window's top edge
	}
	if (this.effects.fade.enabled){
		this.setopacity(menu.dropmenu, 0) //set opacity to 0 so menu appears hidden initially
		if (this.effects.shadow.enabled)
			this.setopacity(menu.shadow, 0) //set opacity to 0 so shadow appears hidden initially
	}
	if ( menu.is_safari ) {
	  posx = event.clientX
	  if( menu.topoffset > 150) {
		posy = posy + 123
	  }	else {
		posy = posy + menu.topoffset
	  }
	} else if (menu.is_chrome) {
	  posx = event.clientX
      if( menu.topoffset > 150) {
		posy = posy + 123
	  } else {
		posy = posy + menu.topoffset
	  }
	} else if (menu.is_ie) {
	  posx = event.clientX	
	  posy = posy + menu.topoffset/2
	} else if (menu.is_ff){
	  posx = posx + menu.leftoffset		
	}
	menu.dropmenu.setcss({left:posx+'px', top:posy+'px', visibility:'visible'})
	if (this.effects.shadow.enabled)
		menu.shadow.setcss({left:posx+anylinkcssmenu.effects.shadow.depth[0]+'px', top:posy+anylinkcssmenu.effects.shadow.depth[1]+'px', visibility:'visible'})
	if (this.effects.fade.enabled){
		clearInterval(menu.animatetimer)
		menu.curanimatedegree=0
		menu.starttime=new Date().getTime() //get time just before animation is run
		menu.animatetimer=setInterval(function(){anylinkcssmenu.revealmenu(menuid)}, 20)
	}
},

revealmenu:function(menuid){
	var menu=anylinkcssmenu.menusmap[menuid]
	var elapsed=new Date().getTime()-menu.starttime //get time animation has run
	if (elapsed<this.effects.fade.duration){
		this.setopacity(menu.dropmenu, menu.curanimatedegree)
		if (this.effects.shadow.enabled)
			this.setopacity(menu.shadow, menu.curanimatedegree*this.effects.shadow.opacity)
	}
	else{
		clearInterval(menu.animatetimer)
		this.setopacity(menu.dropmenu, 1)
		menu.dropmenu.style.filter=""
	}
	menu.curanimatedegree=(1-Math.cos((elapsed/this.effects.fade.duration)*Math.PI)) / 2
},

setcss:function(param){
	for (prop in param){
		this.style[prop]=param[prop]
	}
},

setcssclass:function(el, targetclass, action){
	var needle=new RegExp("(^|\\s+)"+targetclass+"($|\\s+)", "ig")
	if (action=="check")
		return needle.test(el.className)
	else if (action=="remove")
		el.className=el.className.replace(needle, "")
	else if (action=="add" && !needle.test(el.className))
		el.className+=" "+targetclass
},

hidemenu:function(menuid){
	var menu=anylinkcssmenu.menusmap[menuid]
	clearInterval(menu.animatetimer)
	menu.dropmenu.setcss({visibility:'hidden', left:0, top:0})
	menu.shadow.setcss({visibility:'hidden', left:0, top:0})
},

getElementsByClass:function(targetclass){
	if (document.querySelectorAll)
		return document.querySelectorAll("."+targetclass)
	else{
		var classnameRE=new RegExp("(^|\\s+)"+targetclass+"($|\\s+)", "i") //regular expression to screen for classname
		var pieces=[]
		var alltags=document.all? document.all : document.getElementsByTagName("*")
		for (var i=0; i<alltags.length; i++){
			if (typeof alltags[i].className=="string" && alltags[i].className.search(classnameRE)!=-1)
				pieces[pieces.length]=alltags[i]
		}
		return pieces
	}
},

addEvent:function(targetarr, functionref, tasktype){
	if (targetarr.length>0){
		var target=targetarr.shift()
		if (target.addEventListener)
			target.addEventListener(tasktype, functionref, false)
		else if (target.attachEvent)
			target.attachEvent('on'+tasktype, function(){return functionref.call(target, window.event)})
		this.addEvent(targetarr, functionref, tasktype)
	}
},

domready:function(functionref){ //based on code from the jQuery library
	if (dd_domreadycheck){
		functionref()
		return
	}
	// Mozilla, Opera and webkit nightlies currently support this event
	if (document.addEventListener) {
		// Use the handy event callback
		document.addEventListener("DOMContentLoaded", function(){
			document.removeEventListener("DOMContentLoaded", arguments.callee, false )
			functionref();
			dd_domreadycheck=true
		}, false )
	}
	else if (document.attachEvent){
		// If IE and not an iframe
		// continually check to see if the document is ready
		if ( document.documentElement.doScroll && window == window.top) (function(){
			if (dd_domreadycheck) return
			try{
				// If IE is used, use the trick by Diego Perini
				// http://javascript.nwbox.com/IEContentLoaded/
				document.documentElement.doScroll("left")
			}catch(error){
				setTimeout( arguments.callee, 0)
				return;
			}
			//and execute any waiting functions
			functionref();
			dd_domreadycheck=true
		})();
	}
	if (document.attachEvent && parent.length>0) //account for page being in IFRAME, in which above doesn't fire in IE
		this.addEvent(window, function(){functionref()}, "load");
},

addState:function(anchorobj, state){
	if (anchorobj.getAttribute('data-image')){
		var imgobj=(anchorobj.tagName=="IMG")? anchorobj : anchorobj.getElementsByTagName('img')[0]
		if (imgobj){
			imgobj.src=(state=="add")? anchorobj.getAttribute('data-overimage') : anchorobj.getAttribute('data-image')
		}
	}
	else
		anylinkcssmenu.setcssclass(anchorobj, "selectedanchor", state)
},


setupmenu:function(targetclass, anchorobj, pos){
	this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body
	var relattr=anchorobj.getAttribute("rel")
	var dropmenuid=relattr.replace(/\[(\w+)\]/, '')
	var the_dropmenu = document.getElementById(dropmenuid)
	var menu=this.menusmap[targetclass+pos]={
		id: targetclass+pos,
		anchorobj: anchorobj,	
		dropmenu: the_dropmenu,
		revealtype: (relattr.length!=dropmenuid.length && RegExp.$1=="click")? "click" : "mouseover",
		orientation: anchorobj.getAttribute("rev")=="lr"? "lr" : "ud",
		leftoffset: parseInt(the_dropmenu.style.left),
		topoffset: parseInt(the_dropmenu.style.top),
		is_safari: navigator.userAgent.include("Safari") && navigator.vendor.include("Apple"),
		is_ie: navigator.userAgent.include("MSIE"),
		is_chrome: navigator.userAgent.include("Chrome"),
		is_ff: navigator.userAgent.include("Firefox"),
		shadow: document.createElement("div")
	}
	menu.anchorobj._internalID=targetclass+pos
	menu.anchorobj._isanchor=true
	menu.dropmenu._internalID=targetclass+pos
	menu.shadow._internalID=targetclass+pos
	menu.shadow.className="anylinkshadow"
	document.body.appendChild(menu.dropmenu) //move drop down div to end of page
	document.body.appendChild(menu.shadow)
	menu.dropmenu.setcss=this.setcss
	menu.shadow.setcss=this.setcss
	menu.shadow.setcss({width: menu.dropmenu.offsetWidth+"px", height:menu.dropmenu.offsetHeight+"px"})
	this.setopacity(menu.shadow, this.effects.shadow.opacity)
	this.addEvent([menu.anchorobj, menu.dropmenu, menu.shadow], function(e){ //MOUSEOVER event for anchor, dropmenu, shadow
		var menu=anylinkcssmenu.menusmap[this._internalID]
		if (this._isanchor && menu.revealtype=="mouseover" && !anylinkcssmenu.isContained(this, e)){ //event for anchor
			anylinkcssmenu.showmenu(menu.id)
			anylinkcssmenu.addState(this, "add")
		}
		else if (typeof this._isanchor=="undefined"){ //event for drop down menu and shadow
			clearTimeout(menu.hidetimer)
		}
	}, "mouseover")
	this.addEvent([menu.anchorobj, menu.dropmenu, menu.shadow], function(e){ //MOUSEOUT event for anchor, dropmenu, shadow
		if (!anylinkcssmenu.isContained(this, e)){
			var menu=anylinkcssmenu.menusmap[this._internalID]
			menu.hidetimer=setTimeout(function(){
				anylinkcssmenu.addState(menu.anchorobj, "remove")
				anylinkcssmenu.hidemenu(menu.id)
			}, anylinkcssmenu.effects.delayhide)
		}
	}, "mouseout")
	this.addEvent([menu.anchorobj, menu.dropmenu], function(e){ //CLICK event for anchor, dropmenu
		var menu=anylinkcssmenu.menusmap[this._internalID]
		if ( this._isanchor && menu.revealtype=="click"){
			if (menu.dropmenu.style.visibility=="visible")
				anylinkcssmenu.hidemenu(menu.id)
			else{
				anylinkcssmenu.addState(this, "add")
				anylinkcssmenu.showmenu(menu.id)
			}
			if (e.preventDefault)
				e.preventDefault()
			return false
		}
		else
			menu.hidetimer=setTimeout(function(){anylinkcssmenu.hidemenu(menu.id)}, anylinkcssmenu.effects.delayhide)
	}, "click")
},

init:function(targetclass){
	this.domready(function(){anylinkcssmenu.trueinit(targetclass)})
},

trueinit:function(targetclass){
	var anchors=this.getElementsByClass(targetclass)
	var preloadimages=this.preloadimages
	for (var i=0; i<anchors.length; i++){
		if (anchors[i].getAttribute('data-image')){ //preload anchor image?
			preloadimages[preloadimages.length]=new Image()
			preloadimages[preloadimages.length-1].src=anchors[i].getAttribute('data-image')
		}
		if (anchors[i].getAttribute('data-overimage')){ //preload anchor image?
			preloadimages[preloadimages.length]=new Image()
			preloadimages[preloadimages.length-1].src=anchors[i].getAttribute('data-overimage')
		}
		this.setupmenu(targetclass, anchors[i], i)
	}


}

}