/*  Prototype JavaScript framework, version 1.6.1
 *  (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',

  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() {

  var _toString = Object.prototype.toString;

  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 _toString.call(object) == "[object Array]";
  }


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

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

  function isString(object) {
    return _toString.call(object) == "[object String]";
  }

  function isNumber(object) {
    return _toString.call(object) == "[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();
        this.currentlyExecuting = false;
      } catch(e) {
        this.currentlyExecuting = false;
        throw e;
      }
    }
  }
});
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() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  }

  function unescapeHTML() {
    return this.stripTags().replace(/&lt;/g,'<').replace(/&gt;/g,'>').replace(/&amp;/g,'&');
  }


  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.replace(/::/g, '/')
               .replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2')
               .replace(/([a-z\d])([A-Z])/g, '$1_$2')
               .replace(/-/g, '_')
               .toLowerCase();
  }

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

  function inspect(useDoubleQuotes) {
    var escapedString = this.replace(/[\x00-\x1f\\]/g, function(character) {
      if (character in String.specialChar) {
        return String.specialChar[character];
      }
      return '\\u00' + character.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.replace(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
  };
})());

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].replace(/\\\\]/g, ']') : 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(element, name) {
    element = $(element);
    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);
          },
          _getAttr2: 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._getAttr2,
      src:         v._getAttr2,
      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');

  if (Prototype.BrowserFeatures.SpecificElementExtensions) {
    if (HTMLOBJECTELEMENT_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, "\\$1");
          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);

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


/************************************************************************
 *  IcyEffects - Powered by Brokenice Interactive
 *  (c) 2008-2009 Bechetti Luca
 *
 *  IcyGallery is freely distributable under the terms of an GPL license.
 *  For details, see brokenice.it website http://www.brokenice.it
 *
 *  based on fantastic prototype framework
 *
 ************************************************************************/
/*
 * TERMS OF USE - EASING EQUATIONS
 * 
 * Open source under the BSD License. 
 * 
 ° Thanks very much to Robert Penner
 * Copyright © 2001 Robert Penner
 * All rights reserved.
*/
// t: current time, b: begInnIng value, c: change In value, d: duration
Transition =  {
  linear: function(x, t, b, c, d) {
	return c*t/d + b;
  },
  sinus: function( x, t, b, c, d) {
	return Math.sin(t/d*2*Math.PI) * c + b;
  },
  cosinus: function( x, t, b, c, d) {
	return Math.cos(t/d*2*Math.PI) * c + b;
  },
  easeInQuad: function (x, t, b, c, d) {
  	return c*(t/=d)*t + b;
  },
  easeOutQuad: function (x, t, b, c, d) {
  	return -c *(t/=d)*(t-2) + b;
  },
  easeInOutQuad: function (x, t, b, c, d) {
  	if ((t/=d/2) < 1) return c/2*t*t + b;
  	return -c/2 * ((--t)*(t-2) - 1) + b;
  },
  easeInCubic: function (x, t, b, c, d) {
  	return c*(t/=d)*t*t + b;
  },
  easeOutCubic: function (x, t, b, c, d) {
  	return c*((t=t/d-1)*t*t + 1) + b;
  },
  easeInOutCubic: function (x, t, b, c, d) {
  	if ((t/=d/2) < 1) return c/2*t*t*t + b;
  	return c/2*((t-=2)*t*t + 2) + b;
  },
  easeInQuart: function (x, t, b, c, d) {
  	return c*(t/=d)*t*t*t + b;
  },
  easeOutQuart: function (x, t, b, c, d) {
  	return -c * ((t=t/d-1)*t*t*t - 1) + b;
  },
  easeInOutQuart: function (x, t, b, c, d) {
  	if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
  	return -c/2 * ((t-=2)*t*t*t - 2) + b;
  },
  easeInQuint: function (x, t, b, c, d) {
  	return c*(t/=d)*t*t*t*t + b;
  },
  easeOutQuint: function (x, t, b, c, d) {
  	return c*((t=t/d-1)*t*t*t*t + 1) + b;
  },
  easeInOutQuint: function (x, t, b, c, d) {
  	if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
  	return c/2*((t-=2)*t*t*t*t + 2) + b;
  },
  easeInSine: function (x, t, b, c, d) {
  	return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
  },
  easeOutSine: function (x, t, b, c, d) {
  	return c * Math.sin(t/d * (Math.PI/2)) + b;
  },
  easeInOutSine: function (x, t, b, c, d) {
  	return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
  },
  easeInExpo: function (x, t, b, c, d) {
  	return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
  },
  easeOutExpo: function (x, t, b, c, d) {
  	return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
  },
  easeInOutExpo: function (x, t, b, c, d) {
  	if (t==0) return b;
  	if (t==d) return b+c;
  	if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
  	return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
  },
  easeInCirc: function (x, t, b, c, d) {
  	return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
  },
  easeOutCirc: function (x, t, b, c, d) {
  	return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
  },
  easeInOutCirc: function (x, t, b, c, d) {
  	if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
  	return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
  },
  easeInElastic: function (x, t, b, c, d) {
  	var s=1.70158;var p=0;var a=c;
  	if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
  	if (a < Math.abs(c)) { a=c; var s=p/4; }
  	else var s = p/(2*Math.PI) * Math.asin (c/a);
  	return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
  },
  easeOutElastic: function (x, t, b, c, d) {
  	var s=1.70158;var p=0;var a=c;
  	if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
  	if (a < Math.abs(c)) { a=c; var s=p/4; }
  	else var s = p/(2*Math.PI) * Math.asin (c/a);
  	return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
  },
  easeInOutElastic: function (x, t, b, c, d) {
  	var s=1.70158;var p=0;var a=c;
  	if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
  	if (a < Math.abs(c)) { a=c; var s=p/4; }
  	else var s = p/(2*Math.PI) * Math.asin (c/a);
  	if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
  	return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
  },
  easeInBack: function (x, t, b, c, d, s) {
  	if (s == undefined) s = 1.70158;
  	return c*(t/=d)*t*((s+1)*t - s) + b;
  },
  easeOutBack: function (x, t, b, c, d, s) {
  	if (s == undefined) s = 1.70158;
  	return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
  },
  easeInOutBack: function (x, t, b, c, d, s) {
  	if (s == undefined) s = 1.70158; 
  	if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
  	return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
  },
  easeInBounce: function (x, t, b, c, d) {
  	return c - Transition.easeOutBounce (x, d-t, 0, c, d) + b;
  },
  easeOutBounce: function (x, t, b, c, d) {
  	if ((t/=d) < (1/2.75)) {
  		return c*(7.5625*t*t) + b;
  	} else if (t < (2/2.75)) {
  		return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
  	} else if (t < (2.5/2.75)) {
  		return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
  	} else {
  		return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
  	}
  },
  easeInOutBounce: function (x, t, b, c, d) {
  	if (t < d/2) return Transition.easeInBounce (x, t*2, 0, c, d) * .5 + b;
  	return Transition.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
  },
  swing:function(B,C,A,E,D){
  	return((-Math.cos(C/D*Math.PI)/2)+0.5)*E+A
  }
}

//Metodi che estendono gli oggetti Element di prototype
var IcyEffects = {
	/*
	 * Animate
	 * recupare l'elenco degli attributi da animare
	*/
	animate : function(element, attributes,time,options){
		//Creo l'oggetto da animare
		var defOpt = {
				duration: time, 
				transition: Transition.swing,
				Ended			: Prototype.emptyFunction,
    			Started			: Prototype.emptyFunction,
    			Beforestarder	: Prototype.emptyFunction,
    			play			: true
		};
		
		element.obj = new IcyObject(element).set(attributes);
		//Setto le opzioni
		options = options || {};
		Object.extend(defOpt, options);
			
		element.obj.setOptions(defOpt);
			
		
			//REGISTRO GLI EVENTI
			if(Object.isFunction(defOpt.onEnded)) element.obj.onEnded(defOpt.onEnded);
			if(Object.isFunction(defOpt.onBeforeStarted)) element.obj.onBeforeStarted(defOpt.onBeforeStarted);
			if(Object.isFunction(defOpt.onStarted)) element.obj.onStarted(defOpt.onStarted);
			if(Object.isFunction(defOpt.onStopped)) element.obj.onStopped(defOpt.onStopped);

		
		//Avvio l'animazione
		
		if(defOpt.play)	
			element.obj.play();
		return element.obj;
		
	},
	
	/*
	EFFETTI BASE ESTENSIONE DEGLI ELEMENTI
		fade, appear, higlight, blindUp, blindDown
	*/
	fade: function(element, options) {
	    if (!(element = $(element)) || ($(element).obj !== undefined) && $(element).obj.isPlaying()) return;
	    var opt = Object.extend({
	    onEnded: function(){
	    	$(element).setStyle({'display':'none'});
	    }
	    }, options);
	    
	    $(element).animate({opacity: 0}, 500, opt);
    },
  
	appear: function(element, options) {
	    if (!(element = $(element)) || ($(element).obj !== undefined) && (element.visible() || $(element).obj.isPlaying()) ) return;
	    $(element).setOpacity(0);
	    $(element).show();
	    $(element).animate({opacity: 1}, 500, options);
	},

    highlight: function(element, options) {
	    if (!(element = $(element)) || ($(element).obj !== undefined) && (!element.visible() || $(element).obj.isPlaying()) ) return;
	    options = options || {};
	    var highlightColor = options.highlightColor || "#ffff99";
	    var originalColor = element.getStyle('background-color');
	    $(element).setStyle({backgroundColor: highlightColor});
	    $(element).animate({backgroundColor: originalColor}, 500);
    },
    
    blindDown: function(element) {
    	if (!(element = $(element)) || ($(element).obj !== undefined) && (element.visible() || $(element).obj.isPlaying()) ) return;
    	var height = element.getHeight();
    	$(element).animate({height: height + 'px'},1000,{
    	  	onBeforeStarted : function() {element.show(); element.setStyle({'height':'0px'});}
      	});
  	},
  	
  	blindUp: function(element) {
		var  originalHeight;
		
    	if (!(element = $(element)) || ($(element).obj !== undefined) && (!element.visible() || $(element).obj.isPlaying()) ) return;
     	$(element).animate({height:0},1000,{
     		onBeforeStarted: function(){originalHeight = element.getHeight();},
     		onEnded : function() {element.hide(); element.setStyle({'height' : originalHeight + 'px'})}
     	});
    }
}
//Estendo gli elementi di prototype con l'animazione
Element.addMethods(IcyEffects);


/**
 * Classe per estendere le classi al supporto eventi
 * thanks to Matthew Foster
 *
**/
var EventDispatcher = Class.create({});
Object.extend(EventDispatcher.prototype,{
						
	buildListenerChain : function(){
							
		if(!this.listenerChain)
			this.listenerChain = {};							
	
	},
	addEventListener : function(type, listener){
		
		this.buildListenerChain();
							
		if(!this.listenerChain[type])					
			this.listenerChain[type] = [listener];
		else
			this.listenerChain[type].push(listener);
		
	},
	hasEventListener : function(type){
							
		return (typeof this.listenerChain[type] != "undefined");
			
	},
	
	removeEventListener : function(type, listener){
		if(!this.hasEventListener(type))
			return false;
							
		for(var i = 0; i < this.listenerChain[type].length; i++)
			if(this.listenerChain[type][i] == listener)
				this.listenerChain[type].splice(i, 1);
						
	},
	
	dispatchEvent : function(type, args){
		this.buildListenerChain();
							
		if(!this.hasEventListener(type))
			return false;
					
		this.listenerChain[type].any(function(f){ return (f(args) == false ? true : false); });						
	},
	
	on : function(type, listener){
		this.addEventListener(type, listener);
	},
	
	fire : function(type, args){
		this.dispatchEvent(type, args);
	}
});


/*
 * TimeLine
 * classe per schedulare gli effetti
*/
TimeLine = Class.create({
		
	/*
	* Initialize
	* costruttore della classe
	*/
	initialize : function(){
		this.effects = new Array;	
		this.currentPlay = new Array;  
		this.isRun = false;
		this.allEff = new Array();
	},
	
	/*
	* add
	* funziona per aggiungere un effetto alla timeline
	*/
	add : function(obj, ritardo, posizione){
	
		//valori di default
		this.position = {
			after: null,
			before : null,
			started : null
		}
		posizione = posizione || {};
		Object.extend(this.position, posizione);
		//Se non ha vincoli lo inserisco in coda alla timeline
		if(this.position.after ==  null && this.position.before ==  null && this.position.started == null){
			this.e = new TimeLineItem(obj, ritardo);
			this.effects.push(this.e);
			this.registerEvent(this.e);
			this.allEff.push(this.e);
		//Trovo il punto in cui inserirlo	
		}else if (this.position.after != null){
			this.insObj(this.position.after, obj, ritardo, 'after');
		}else if (this.position.before != null)
			this.insObj(this.position.before, obj, ritardo, 'before');
		else if (this.position.started != null)
			this.insObj(this.position.started, obj, ritardo, 'started');
	
	},
	
	/*
	* remove
	* rimuove un oggetto dalla timeline
	*/
	remove : function(obj){
		this.allEff = this.allEff.reject(function(item) { 
		
			if(item.obj == obj){
				item.remove(this.allEff);
				return true;
			}else
				return false; 
		
		}.bind(this));
		this.effects = this.effects.reject(function(item) { return item.obj == obj; });
	},
	
	/*
	 * search
	 * cerca l'ogetto in ricorsione nelle code
	*/
	search : function(i, posObj){
		i.started.each(function(itemSt){
				if(itemSt.obj == posObj){
					this.found = true;
					this.item = itemSt;
					this.parentItem = i;
				}else
					this.search(itemSt, posObj);
		}.bind(this));
		i.ended.each(function(itemEn){
				if(itemEn.obj == posObj){
					this.found = true;
					this.item = itemEn;
					this.parentItem = i;
				}else
					this.search(itemEn, posObj);
		}.bind(this));
		i.beforeStarted.each(function(itemBf){
				if(itemBf.obj == posObj){
					this.found = true;
					this.item = itemBf;
					this.parentItem = i;
				}else
					this.search(itemBf, posObj)
		}.bind(this));
	},
	
	/*
	* insObj
	* funzione per inserire un oggetto nell'array apposito
	*/
	insObj : function(posObj, object, ritardo, pos){
		//Cerco l'oggetto in tutte le code
		this.found = false;
		this.parentItem = null;
		this.effects.find(function(item) {
			if(item.obj == posObj){
				this.found = true;
				this.item = item;
			}
		}.bind(this));
		if(!this.found)	this.effects.each(function(e){this.search(e, posObj)}.bind(this));
		
		//Se è stato trovato lo aggiungo al suo posto
		if(this.found){

				this.e = new TimeLineItem(object, ritardo);
				this.registerEvent(this.e);
				this.allEff.push(this.e);
				switch(pos){
					case "after":	//In coda
						this.item.insertEnded(this.e);
					break;
					case "before":	//In testa
						if(this.parentItem != null){
							this.parentItem.insertEnded(this.e);
							this.parentItem.ended = this.parentItem.ended.without(this.item);
						}else{
							this.effects = this.effects.without(this.item);
							this.effects.push(this.e);
						}
						this.e.insertEnded(this.item);
					break;
					case "started":	//Partenza insieme
						this.item.insertStarted(this.e);
					break;
				}
		}
	},
	
	/*
	* registerEvent
	* funzione per registrare gli eventi delle animazioni
	*/
	registerEvent : function(o){
			o.obj.addEventListener("anim:ended", function(){
				o.ended.each(function(e){
					
					if(!e.run){
						if(e.ritardo == 0){
							e.obj.play();
						}else
							window.setTimeout(e.obj.play.bind(e.obj),e.ritardo);
						//Delete current animation
						this.currentPlay.push(e.obj);
						e.play();
					}
				}.bind(this));
				this.currentPlay = this.currentPlay.without(o.obj);
				if(this.currentPlay.size() == 0)
					this.stop();
			}.bind(this));
			o.obj.addEventListener("anim:started", function(){
				o.started.each(function(e){
					if(!e.run){
						if(e.ritardo == 0){
							e.obj.play();
						}else
							window.setTimeout(e.obj.play.bind(e.obj),e.ritardo);
						//Delete current animation
						this.currentPlay.push(e.obj);
						e.play();
					}
				}.bind(this));
			}.bind(this));
			o.obj.addEventListener("anim:beforestarted", function(){
				o.beforeStarted.each(function(e){
					if(!e.run){
						if(e.ritardo == 0){
							e.obj.play();
						}else
							window.setTimeout(e.obj.play.bind(e.obj),e.ritardo);
						//Delete current animation
						this.currentPlay.push(e.obj);
						e.play();
					}
				}.bind(this));
			}.bind(this));
	},
	
	/*
	* run
	* funzione che da il via alle animazioni
	*/
	run : function(){

			//Avvio tutti gli effetti pronti
			this.effects.each(function(o){
				
				if(!o.run && o.ritardo == 0){
					o.obj.play();
					o.play();
					this.currentPlay.push(o.obj);
				}else if(!o.run){
					window.setTimeout(o.obj.play.bind(o.obj),o.ritardo);
					o.play();
					this.currentPlay.push(o.obj);
				}
				
			}.bind(this));

	},
	
	/*
	* stop
	* ferma la timeline corrente
	*/
	stop : function(){
		this.isRun = false;
	},
	
	/*
	* pause
	* ferma momentaneamente tutti gli effetti al punto in cui si trovano
	*/
	pause : function(){
		this.allEff.reverse(false).each(function(e){
			e.stop();
		});
	},
	
	/*
	 * play
	 * fa ripartire la timeline
	*/
	play : function(){
		this.currentPlay.each(function(e){
			e.play();
		});
	},
	
	/*
	* rewind
	* riavvolge la timeline
	*/
	rewind : function(obj) {
		
		this.allEff.reverse(false).each(function(e){
		
			e.stop();
			e.obj.rewind();
		});
		this.stop();
  }
		
});

/*
* Class TimeLineItem
* Ogggetto delle timeline
*/

TimeLineItem = Class.create({

	/*
	* initialize
	* costruttore della classe
	*/
	initialize : function(elem, ritardo){
		this.obj = elem;
		this.ended = new Array;
		this.started = new Array;
		this.beforeStarted = new Array;
		this.ritardo = ritardo;
		this.run = false;
	},
	
	/*
	* initialize
	* inserisce l'animazione in coda a se stessa
	*/
	insertEnded : function(obj){
		this.ended.push(obj);
	},
	
	/*
	* initialize
	* fa partire l'animazione prima di se stessa
	*/
	insertBeforeStarted : function(obj){
		this.started.push(obj);
		
	},
	
	/*
	* insertStarted
	* inserisce l'animazione in testa a se stessa
	*/
	insertStarted : function(obj){
		this.beforeStarted.push(obj);
	},
	
	/*
	* stop
	* marca l'oggetto come eseguito
	*/
	stop : function(){
		this.run = false;
	},

	/*
	* paly
	* marca l'oggetto come in esecuzione
	*/
	play : function(){
		this.run = true;
	},

	remove : function(allEff){
		this.ended.each(function(f){allEff = allEff.without(f)});
		this.started.each(function(f){allEff = allEff.without(f)});
		this.beforeStarted.each(function(f){allEff = allEff.without(f)});
		this.ended.clear();
		this.started.clear();
		this.beforeStarted.clear();
		
	}
});


/*
 * CLASSE BASE PER L'OGGETTO DA ANIMARE
 *
*/
IcyBase = Class.create(EventDispatcher, (function() {

  /** 
   *  initialize
   *  costruttore della classe
   **/
  function initialize(options) {
  	//DEFAULT PARAMETRI
    this.defaultDuration		= 500,
	this.defaultTransition 		= Transition.linear,
    this.options				= Object.extend(Object.clone({duration: this.defaultDuration, transition: this.defaultTransition}), options);
    //PARAMETRI DELL'ANIMAZIONE
    this.animationIteration		= null;		//tempo attuale animazione
    this.playing				= false;	//oggetto in animazione o no
    this.cycle					= false;	//animazione ciclica
    //EVENTI SOLLEVATI DALLE ANIMAZIONI
    this.on	= {
    	Ended			: Prototype.emptyFunction, 	//Sollevato ad animazione conclusa
    	Started			: Prototype.emptyFunction,	//Sollevato ad animazione iniziata
    	Beforestarder	: Prototype.emptyFunction	//Sollevata prima che inizi l'animazione
    };
    //Setto le opzioni
    this.setOptions(options);
 
  }
 
  
  /** 
   * setOptions
   * Setta le opzioni passate come argomenti 
   **/
  function setOptions(options) {
    Object.extend(this.options, options || {});  
    return this; 
  }
  
  /** 
   * getDuration
   * restituisce la durata dell'animazione
   **/
  function getDuration() {
    return this.options.duration;
  }
  
  /** 
   * isPlaying
   * Mi dice se l'oggetto è animato
   **/
  function isPlaying() {
    return this.playing;
  }
  
  /** 
   *  setAnimationType
   *  setta il tipo di animazione
   *	loop
   **/
  function setAnimationType(type, count) {
    this.cycle = type == 'none' ? false : {type: type, count: count || 1, current: 1}
    return this;
  }
  
  /** 
   *  play
   *  funzione che inizializza l'animazione
   *
   **/
  function play() {
  	//Se l'oggetto è già animato ritorno
    if (this.playing) return;
    this.element.obj = this;
    //Sollevo l'evento ed avvio l'animazione
    this.fireCall('beforeStarted');
    this.playing = true;

    //Resetto i controlli per la nuova animazione
    if (this.animationIteration == null) {
      this.animationIteration = 0;
      this.initializeAnimation();
    }
    //Aggiungo l'oggetto al timer che schedula le animazioni
    IcyTimer.register(this);
	//Sollevo l'evento di avvio
    this.fireCall('started');
    return this;
  }
  
  /** 
   *  stop
   *  fermo l'animazione alla posizione attuale
   **/
  function stop() {
  	//Sollevo l'evento
    this.fireCall('stopped');
    //Rimuovo l'oggetto dal timer
    IcyTimer.unregister(this);
    this.playing = false;
    return this;
  }
  
  /** 
   *  rewind
   *  riavvolge l'animazione, simile al flash player
   **/
  function rewind() {
    //ferma l'animazione
    this.stop();
    //Riparto da 0
    this.repaint(0);
    this.animationIteration = null;
    //Se è un animazione ciclica la risetto a 1
    if (this.cycle) this.cycle.current = 1;
    return this;
  }

  /** 
   *  timerUpdate
   *  viene periodicamente chiamata dal timer
   **/
  function timerUpdate(dx) {
   
    //Aggiorno il tempo corrente dell'animazione
    this.animationIteration += dx;
        
    //Controllo se l'animazione sia finita o meno
    if (this.animationIteration > this.getDuration() || this.animationIteration < 0) {
      //setto l'animazione all'ultima posizione
      this.repaint(this.animationIteration < 0 ? 0 : 1);
      //se è un animazione ciclica che non è ancora finita
      if (this.cycle && this.cycle.current < this.cycle.count) {
      	//se è un loop incremento e poi riparto
        if (this.cycle.type == 'loop') {
          this.cycle.current++;
          this.repaint(0);
          this.animationIteration =0;
        }
      } else {	
      	//Animazione ciclica finita
        this.stopAnimation();
        this.fireCall('ended');
		//Elimino l'oggetto dal timer
        IcyTimer.unregister(this);
      	//Azzero le variabili
        this.animationIteration = null;
        this.playing   = false;
        if (this.cycle) {
          this.cycle.current = 0;
        }
      }
    }
    //L'animazione è semlice
    else {
      //Ottengo i dati dalla transitions scelta ed effettuo il repaint del componente
      var pos = this.options.transition(this.animationIteration / this.getDuration(), this.animationIteration, 0, 1, this.getDuration());
      this.repaint(pos);
    }
  }
  
  /*
  * onEnded
  * Setta la funziona da richiamare ad animazione finita
  */
  function onEnded(callback) {
    this.on.onEnded = callback;
    return this;
  }
  
  /*
  * onStarted
  * Setta la funziona da richiamare ad animazione iniziata
  */
  function onStarted(callback) {
    this.on.onStarted = callback;
    return this;
  }
  
  /*
  * onBeforeStarted
  * Setta la funziona da richiamare prima che inizi l'animazione
  */
  function onBeforeStarted(callback) {
    this.on.onBeforestarted = callback;
    return this;
  }
 
  /*
  * onStopped
  * Setta la funziona da richiamare quando l'animazione viene stoppata
  */
  function onStopped(callback) {
    this.on.onStopped = callback;
    return this;
  }
  
  /*
  * fireCall
  * Richiama le funzioni passate come argomenti
  */
  function fireCall(eventName) {
    var callback;
    switch(eventName.capitalize()){
    	case "Ended":
    		this.fire("anim:ended");
    		if(Object.isFunction(this.on.onEnded))this.on.onEnded(this);
  		break;
  		case "Started":
  			this.fire("anim:started");
    		if(Object.isFunction(this.on.onStarted))this.on.onStarted(this);
  		break;
  		case "Beforestarted":
  			this.fire("anim:beforestarted");
    		if(Object.isFunction(this.on.onBeforestarted))this.on.onBeforestarted(this);
  		break;
  		case "Stopped":
    		if(Object.isFunction(this.on.onStopped))this.on.onStopped(this);
  		break;
  	}
  }

  /*
   * repaint
   * definita nella classe superiore
  */
  function repaint(pos) {
   
  }
 
  return {           
    initialize:      initialize,
    setOptions:      setOptions,
    setAnimationType:        setAnimationType,
    getDuration:     getDuration,
    play:            play,
    stop:            stop,
    rewind:          rewind,
    isPlaying:       isPlaying,
    timerUpdate: timerUpdate,
    initializeAnimation:  Prototype.emptyFunction,
    stopAnimation:   Prototype.emptyFunction,
    repaint: repaint,
    fireCall:            fireCall,
    onStarted:       onStarted,
    onEnded:         onEnded,
    onBeforeStarted: onBeforeStarted,
    onStopped:		 onStopped
  }
})());
/** 
 *  class IcyAttribute
 *  classe per definire gli attributi dell'oggetto
 **/
 IcyAttribute = Class.create((function() {
 
   /** 
    * initialize
    * costruttore della classe
    *  @PRAMA key - Il nome dell'attributo
    *  @PARAM from - (String | Number): colore RGB o valore
   **/
  function initialize(key, start, end) {
    this.key    = key;
    this.to     = end;
    this.from   = start;
    this.type   = isColorOrNumber(this.from);
    this.unit   = cUnit(this.from);
    this.startVal = calculateStartValue(this.from, this.isColor());
    this.toVal   = calculateEndValue(this);

  }
  
  /** 
   *  convert
   *  converte il valore o RGB
   **/
  function convert(pos) {
    if (this.isNumber()) 
      return numberToValue(this.startVal, this.toVal, pos) + this.unit;
    // Else it's a color
    else {
      var r = parseInt(numberToValue(this.startVal[0], this.toVal[0], pos));
      var g = parseInt(numberToValue(this.startVal[1], this.toVal[1], pos));
      var b = parseInt(numberToValue(this.startVal[2], this.toVal[2], pos));
      return "rgb(" + r + ", " + g + ", " + b + ")";
    }
  }

  /** 
   *  reset
   *  
   **/
  function reset(from) {
    if (from && this.relative)
      this.from = from;
    this.startVal = calculateStartValue(this.from, this.isColor());
    this.relative = false;
    this.toVal   = calculateEndValue(this);
  }
  
  /** 
   *  isColor
   *  ritorna true se il tipo dell'attributo è un colore
   **/
  function isColor() {
    return this.type == 'Color'
  }
  
  /** 
   *  isNumber
   *  ritorna true se il tipo dell'attributo è un numero
   **/
  function isNumber() {
    return this.type == 'Number'
  }
  
  /*
   * isColorOrNumber
   * restituisce se il valore passato è un colore o un numero
  */
  function isColorOrNumber(value) {
    if (Object.isString(value) && value.isColor())
      return 'Color'
    else
      return 'Number'
  }
  
  /** 
   *  cUnit
   *  
   **/
  function cUnit(from) {
    var match;
    
    if (Object.isString(from)){
    	if(from.indexOf('px') != -1)
   			return 'px';
   		else if(from.indexOf('pt') != -1)
   			return 'pt';
   		else if(from.indexOf('%') != -1)
   			return '%';
   		else if(from.indexOf('em') != -1)
   			return 'em';
  }else
      return '';
  }
  
  /*
  * calculateStartValue
  * calcola il valore iniziale per gli attributi
  */
  function calculateStartValue(from, color) {
    if (color) 
      return from.getRGB();
    else if (Object.isString(from))
      return parseFloat(from);
    else
      return from;
  }
  
  /*
  * calculateEndValue
  * calcola il valore reale a secondo del tipo di attributo
  */
  function calculateEndValue(attribute) {	
  	//se è un colore ritorno l'RGB
    if (attribute.isColor())
      return attribute.to.getRGB();
    //Se è una stringa controllo la presenza degli operatori
    else if (Object.isString(attribute.to)) {
      if (isOperator(attribute.to))
        return parseOp(attribute);
      else
        return parseFloat(attribute.to);
    }
    else
      return attribute.to;
  }
  
  /*
  * numberToValue
  * 
  */
  function numberToValue(from, to, pos) {
    return from + (to - from) * pos;
  }
  
  /*
  * isOperator
  * contralle se la stringa passata è un operatore
  */
  function isOperator(string) {
    return string.match(/^([\+\-\*\/]=)(\d*)$/);
  }
  
  /*
   * parseOp
   * trova l'operatore passato a aggiusta il valore di arrivo dell'attributo
  */
  function parseOp(attribute) {
    attribute.relative = true;
    var match = isOperator(attribute.to);

    if ((match[1] == '-=') || (!match[1] == '+='))
      return attribute.startVal - parseFloat(match[2]);
    else if ((match[1] == '+=') || (!match[1] == '-='))
      return attribute.startVal + parseFloat(match[2]);
    else if ((match[1] == '*=') || (!match[1] == '/='))
      return attribute.startVal * parseFloat(match[2]);
    else if ((match[1] == '/=') || (!match[1] == '*='))
      return attribute.startVal / parseFloat(match[2]);
  }
  
  return {
    initialize: initialize,
    convert:    convert,
    reset:      reset,
    isNumber:   isNumber,
    isColor:    isColor
  };
})());
/** 
 *  class IcyTimer
 *  il timer che animare gli oggetti
 **/
IcyTimer = (function() {
  var timer     = null, 
      freq 		= 900/60,
      lastCall  = null,
      objects   = new Array();
  
  /** 
   * register
   * registro un oggetto da animare al timer
   *
   **/
  function register(object) {
    if (!isObjectReg(object)) {
      objects.push(object);
      play();
    }
  }
  
  /** 
   *  unregister
   *  Rimuovo l'oggetto dal timer 
   **/
  function unregister(object) {
    objects = objects.reject(function(item) { return item == object; });
    //Se non ci sono più oggetti fermo il timer, le animazioni sono finite
    if (objects.length == 0)
      stop();
  }
  
  /** 
   *  isObjectReg 
   *  controllo se un oggetto è già registrato nel timer
   **/
  function isObjectReg(object) {
    return objects.find(function(item) { return item == object; });
  }

  /** 
   *  play 
   *  avvia il timer
   **/
  function play() {
  	//Se non c'è già un timer
    if (timer == null) {
      //avvio un nuovo timer
      lastCall = new Date().getTime();
      timer    = setInterval(timerCall, freq);
      timerCall();
    }
  }
  
  /** 
   *  stop 
   *  ferma il timer 
   **/
  function stop() {
    if (timer) {
      clearInterval(timer);
      timer    = null;
      lastCall = 0;
    }
  }
  
   /** 
   *  timerCall 
   *  chiamata periodicamente va ed effettuare il repaint dei vari oggetti 
   **/
  function timerCall() {
    var now   = new Date().getTime();
    var dx = now - lastCall;
    lastCall  = now;
    //Chiamo il repaint degli oggetti registrati
    objects.invoke('timerUpdate', dx);
  }
  
  return {
    register:     register,
    unregister:   unregister,
    isObjectReg: isObjectReg
  }
})();


Object.extend(String.prototype, {
  //thanks to predator
  isColor: function() {return this.match(/^\#/) || this.match(/^rgb\(/);},
  getRGB: function() {
    function toDec(string) {
      if (string.length == 1)
        string += string;
      return parseInt(string, 16);
    }
  
    if (this.isColor()) {
      var match;
      // controllo rgb(r,g,b)
      if (match = this.match(/(^rgb\()(\d+), (\d+), (\d+)(\))/i)) 
        return [parseInt(match[2]), parseInt(match[3]), parseInt(match[4])];
      // controllo #xxx
      if (match = this.match(/^\#([0-9a-f]{1})([0-9a-f]{1})([0-9a-f]{1})$/i)) {
        return match.slice(1).collect(toDec);
      }
      // controllo #xxxxxx 
      if (match = this.match(/^\#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i)) 
        return match.slice(1).collect(toDec);
    }    
    return null;
  }
});

/** 
 *  class IcyObject
 *  classe per gli oggetti da animare
 **/
IcyObject = Class.create(IcyBase, (function() {

  /** 
   *  initialize
   *  costruttore della classe, crea l'oggetto da animare
   **/
  function initialize($super, element, options) {
    $super(options);
    this.element = $(element);
  }
  
  /*
   * set
   * setta gli attributi per l'oggetto
  */
  function set(attributes) {
    this.originalAttributes = attributes;    
    return this;
  }
    
  /*
   * createAllAttributes
   * crea un ogetto IcyAttribute per ogni elemento passato
  */
  function initializeAnimation() {
  	//Se non ci sono gli attributi li creo
    this.attributes = this.attributes || createAllAttributes(this.originalAttributes, this.element);
	//Restto il valore degli attributi
    this.attributes.each(function(attribute) {
      attribute.reset(this.element.getStyle(attribute.key));
    }, this);
  } 
  /*
   * createAllAttributes
   * crea un ogetto IcyAttribute per ogni elemento passato
  */
  function createAllAttributes(attributes, element) {
    var array = [];
    $H(attributes).each(function(item) {
      var sval = ''+item.value;
      //Test if value it's in %
      if(sval.indexOf("%") != -1){
      	var s = element.getStyle(item.key).replace('px', '').replace('em', '').replace('pt', '').replace('%', '');
      	if(s == 0)
      		start = '0%';
      	//Calculate real % value
      	else{
      		start = ((s / parseInt(element.getOffsetParent().getStyle(item.key)) ) * 100).round() + '%';
      	}
      }else
      	start = element.getStyle(item.key);
      	
      array.push(new IcyAttribute(item.key, start, item.value));
    });
    return array;
  }
  
    
  /*
   * repaint
   * Setta il nuovo valore per ogni attributo
  */
  function repaint(pos) {
    var style = {};
    if(this.attributes!==undefined){
    this.attributes.each(function(attribute) {
      style[attribute.key] = attribute.convert(pos);
    }, this);
    this.element.setStyle(style);
    }
  }
   
  
  
  return {
    initialize:      initialize,
    set:         set,
    initializeAnimation:  initializeAnimation,
    repaint: repaint
  }
})());

//THANKS TO JQUERY.FX, PROTOTYPE, PROtoVal, SCRIPT.ACULO.US AN MORE ANIMATION FRAMEWORKS FOR IDEAS//
/**
 * Namespace: Element Extensions
 * 
 * Element is a global object provided by the prototype.js library.  The
 * functions documented here are extensions to the Element object provided
 * by Jx to make cross-browser compatibility easier to achieve.
 */
Object.extend( Element, {
	
    /**
     * Function: getBoxSizing
     *
     * return the box sizing of an element, one of 'content-box' or 
     *'border-box'.
     *
     * Parameter: {Object} elem
     *
     * the element to get the box sizing of.
     *
     * Return: {String} the box sizing of the element.
     */
    getBoxSizing : function(elem) {
      var result = 'content-box';
      elem = $(elem);
      if (elem.currentStyle || window.opera) { 
          var cm = document["compatMode"];
          if (cm == "BackCompat" || cm == "QuirksMode") { 
              result = 'border-box'; 
          } else {
              result = 'content-box'; 
        }
      } else {
          if (arguments.length == 0) {
              node = document.documentElement; 
          }
          var sizing = Element.getStyle(elem, "-moz-box-sizing");
          if (!sizing) { 
              sizing = Element.getStyle(elem, "box-sizing"); 
          }
          result = (sizing ? sizing : 'content-box');
      }
      return result;
    },
    /**
     * Function: getContentBoxSize
     *
     * return the size of the content area of an element.  This is the size of
     * the element less margins, padding, and borders.
     *
     * Parameter: {Object} elem
     *
     * the element to get the content size of.
     *
     * Return: {Object} an object with two properties, width and height, that
     * are the size of the content area of the measured element.
     */
    getContentBoxSize : function(elem) {
	  elem = $(elem);
      Element.toggleMeasurable(elem);
      var w = elem.offsetWidth;
      var h = elem.offsetHeight;
      var padding = Element.getPaddingSize(elem);
      var border = Element.getBorderSize(elem);
      Element.toggleMeasurable(elem);
      w = w - padding.left - padding.right - border.left - border.right;
      h = h - padding.bottom - padding.top - border.bottom - border.top;
	  //window.alert("ottengo w: " + w  +  " h: " + h);
      return {width: w, height: h};
    },
    /**
     * Function: getBorderBoxSize
     *
     * return the size of the border area of an element.  This is the size of
     * the element less margins.
     *
     * Parameter: {Object} elem
     *
     * the element to get the border sizing of.
     *
     * Return: {Object} an object with two properties, width and height, that
     * are the size of the border area of the measured element.
     */
    getBorderBoxSize: function(elem) {
      elem = $(elem);
      Element.toggleMeasurable(elem);
      var w = elem.offsetWidth;
      var h = elem.offsetHeight;
      Element.toggleMeasurable(elem);
      return {width: w, height: h}; 
    },
    /**
     * Function: setContentBoxSize
     *
     * set either or both of the width and height of an element to
     * the provided size.  This function ensures that the content
     * area of the element is the requested size and the resulting
     * size of the element may be larger depending on padding and
     * borders.
     *
     * Parameter: {Object} elem
     *
     * the element to set the content area of.
     *
     * Parameter: {Object} size
     *
     * an object with a width and/or height property that is the size to set
     * the content area of the element to.
     */
    setContentBoxSize : function(elem, size) {
        elem = $(elem);
        if (Element.getBoxSizing(elem) == 'border-box') {
            var padding = Element.getPaddingSize(elem);
            var border = Element.getBorderSize(elem);
            if (typeof size.width != 'undefined') {
                var width = (size.width + padding.left + padding.right + border.left + border.right);
                if (width < 0) {
                    width = 0;
                }
                elem.style.width = width + 'px';
            }
            if (typeof size.height != 'undefined') {
                var height = (size.height + padding.top + padding.bottom + border.top + border.bottom);
                if (height < 0) {
                    height = 0;
                }
                elem.style.height = height + 'px';
				
            }
        } else {
            if (typeof size.width != 'undefined') {
                elem.style.width = size.width + 'px';
            }
            if (typeof size.height != 'undefined') {
                elem.style.height = size.height + 'px';
            }
        }
    },
    /**
     * Function: setBorderBoxSize
     *
     * set either or both of the width and height of an element to
     * the provided size.  This function ensures that the border
     * size of the element is the requested size and the resulting
     * content areaof the element may be larger depending on padding and
     * borders.
     *
     * Parameter: {Object} elem
     *
     * the element to set the border size of.
     *
     * Parameter: {Object} size
     *
     * an object with a width and/or height property that is the size to set
     * the content area of the element to.
     */
    setBorderBoxSize : function(elem, size) {
		//console.log(arguments);
      elem = $(elem);

      if (Element.getBoxSizing(elem) == 'content-box') {
		
        var padding = Element.getPaddingSize(elem);
        var border = Element.getBorderSize(elem);
        var margin = Element.getMarginSize(elem);
        if (typeof size.width != 'undefined') {
          var width = (size.width - padding.left - padding.right - border.left - border.right - margin.left - margin.right);
          if (width < 0) {
            width = 0;
          }
		  elem.setStyle({width: width + 'px'});
        }
        if (typeof size.height != 'undefined') {
          var height = (size.height - padding.top - padding.bottom - border.top - border.bottom - margin.top - margin.bottom);
          if (height < 0) {
            height = 0;
          }
		  elem.setStyle({height: height + "px"});

        }
      } else {  
        if (typeof size.width != 'undefined' && size.width >= 0) {
			elem.setStyle({width: size.width + "px"});
        }
        if (typeof size.height != 'undefined' && size.height >= 0) {
			elem.setStyle({height: size.height+ "px"});
			
        }
      }
	  elem.fire('UILayout:resize');
    },
    /**
     * Function: getPaddingSize
     *
     * returns the padding for each edge of an element
     *
     * Parameter: elem
     *
     * The element to get the padding for.
     *
     * Return: {Object} an object with properties left, top, right and bottom
     * that contain the associated padding values.
     */
    getPaddingSize : function (elem) {
      elem = $(elem);
      Element.toggleMeasurable(elem);
      var l = Element.getNumber(Element.getStyle(elem, 'padding-left'));
      var t = Element.getNumber(Element.getStyle(elem, 'padding-top'));
      var r = Element.getNumber(Element.getStyle(elem, 'padding-right'));
      var b = Element.getNumber(Element.getStyle(elem, 'padding-bottom'));
      Element.toggleMeasurable(elem);
      return {left:l, top:t, right: r, bottom: b};
    },
    /**
     * Function: getBorderSize
     *
     * returns the border size for each edge of an element
     *
     * Parameter: elem
     *
     * The element to get the borders for.
     *
     * Return: {Object} an object with properties left, top, right and bottom
     * that contain the associated border values.
     */
    getBorderSize : function(elem) {
      elem = $(elem);
      Element.toggleMeasurable(elem);
      var l = Element.getNumber(Element.getStyle(elem, 'border-left-width'));
      var t = Element.getNumber(Element.getStyle(elem, 'border-top-width'));
      var r = Element.getNumber(Element.getStyle(elem, 'border-right-width'));
      var b = Element.getNumber(Element.getStyle(elem, 'border-bottom-width'));
      Element.toggleMeasurable(elem);
      return {left:l, top:t, right: r, bottom: b};
    },
    /**
     * Function: getMarginSize
     *
     * returns the margin size for each edge of an element
     *
     * Parameter: elem
     *
     * The element to get the margins for.
     *
     * Return: {Object} an object with properties left, top, right and bottom
     * that contain the associated margin values.
     */
    getMarginSize : function(elem) {
      elem = $(elem);
      Element.toggleMeasurable(elem);
	  if(elem.getStyle("position") == 'relative') {
	  	return {left: 0, top: 0, right: 0, bottom: 0};
	  }
      var l = Element.getNumber(Element.getStyle(elem, 'margin-left'));
      var t = Element.getNumber(Element.getStyle(elem, 'margin-top'));
      var r = Element.getNumber(Element.getStyle(elem, 'margin-right'));
      var b = Element.getNumber(Element.getStyle(elem, 'margin-bottom'));
      Element.toggleMeasurable(elem);
      return {left:l, top:t, right: r, bottom: b};
    },
    /**
     * Function: getNumber
     *
     * safely parse a number and return its integer value.  A NaN value 
     * returns 0.  CSS size values are also parsed correctly.
     *
     * Parameter: {Mixed} n
     *
     * the string or object to parse.
     *
     * Return: {Integer} the integer value that the parameter represents
     */
    getNumber: function(n) {
      var result = n==null||isNaN(parseInt(n))?0:parseInt(n);
      return result;
    },
    /**
     * Function: getPageDimensions
     *
     * return the dimensions of the browser client area.
     *
     * Return: {Object} an object containing a width and height property 
     * that represent the width and height of the browser client area.
     */
    getPageDimensions: function() {
        return {width: Element.getInsideWindowWidth(), height: Element.getInsideWindowHeight()};
    },
    /**
     * Function: getInsideWindowWidth
     *
     * returns the width of the browser client area
     *
     * Return: {Integer} the width of the browser client area
     */
    getInsideWindowWidth: function() {
        if (window.innerWidth) {
            return window.innerWidth;
        } else if (document.compatMode && document.compatMode.indexOf("CSS1") >= 0) {
            // measure the html element's clientWidth
            return document.body.parentElement.clientWidth;
        } else if (document.body && document.body.clientWidth) {
            return document.body.clientWidth;
        }
        return 0; 
    },
    /**
     * Function: getInsideWindowHeight
     *
     * returns the height of the browser client area
     *
     * Return: {Integer} the height of the browser client area
     */
    getInsideWindowHeight: function() {
        if (window.innerHeight) {
            return window.innerHeight;
        } else if (document.compatMode && document.compatMode.indexOf("CSS1") >= 0) {
            // measure the html element's clientHeight
            return document.body.parentElement.clientHeight;
        } else if (document.body && document.body.clientHeight) {
            return document.body.clientHeight;
        }
        return 0; 
    },
    /**
     * Function: toggleMeasurable
     *
     * toggles an element's display style property so it can be
     * measured.  If the element has display: none, it is
     * changed to display: block and made temporarily visible
     * so that it can be measured.  Calling this function
     * a second time with the same element will revert the
     * changes.  This allows an element to be measured in
     * various ways.
     *
     * Parameter: {Object} elem
     *
     * the element to measure.
     */
    toggleMeasurable: function(elem) {
        if (Element.getStyle(elem, 'display') == 'none') {
            elem.old = {};
            elem.old.display = elem.style.display;
            elem.old.visibility = elem.style.visibility;
            elem.old.position = elem.style.position;
            elem.style.position = 'absolute';
            elem.style.visibility = 'hidden';
            elem.style.display = 'block';
        } else {
            if (elem.old) {
                elem.style.display = elem.old.display;
                elem.style.visibility = elem.old.visibility;
                elem.style.position = elem.old.position;
                elem.old = null;
            }
        }
    }
} );

Hash.prototype.without = function() {
    var values = $A(arguments);
	var retHash = $H();
    this.each(function(entry) {
		if(!values.include(entry.key))
			retHash.set(entry.key, entry.value);
    });
	return retHash;
}

Element.insertAfter = function(insert, element) {
	if (element.nextSibling) element.parentNode.insertBefore(insert, element.nextSibling);
	else element.parentNode.appendChild(insert);
}

// Fix exceptions thrown thrown when removing an element with no parent
Element._remove = Element.remove;
Element.remove = function(element) {
	element = $(element);
	if (element.parentNode)
		return Element._remove(element);
}



/* 
  * This simple piece of code automates the creating of Ajax loading symbols.
 * The loading symbol covers an HTML element with correct position and size - example:
 * $('myElement').startWaiting() and $('myElement').stopWaiting()
 */
 
Protoload = {
	// the script to wait this amount of msecs until it shows the loading element
	timeUntilShow: 100,
	
	// opacity of loading element
	opacity: 0.8,

	// Start waiting status - show loading element
	startWaiting: function(element, className, timeUntilShow) {
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (className == undefined)
			className = 'waiting';
		if(element == document.body)
			className = 'waitingbody';
		if (timeUntilShow == undefined)
			timeUntilShow = Protoload.timeUntilShow;
		
		element._waiting = true;
		if (!element._loading) {
			var e = document.createElement('div');
			(element.offsetParent || document.body).appendChild(element._loading = e);
			e.style.position = 'absolute';
			e.hide();
			try {e.style.opacity = Protoload.opacity;} catch(e) {}
			try {e.style.MozOpacity = Protoload.opacity;} catch(e) {}
			try {e.style.filter = 'alpha(opacity='+Math.round(Protoload.opacity * 100)+')';} catch(e) {}
			try {e.style.KhtmlOpacity = Protoload.opacity;} catch(e) {}
			if(element == document.body){
				$(e).update('<div class="waitingload" />')
				parentSize = Element.getPageDimensions();
			}else{
				parentSize = 0;
			}
		}
		element._loading.className = className;
		window.setTimeout((function() {
			realHeight = (parentSize == 0) ?this.offsetHeight:parentSize.height; 
			if (this._waiting) {
				var left = this.offsetLeft, 
					top = this.offsetTop,
					width = this.offsetWidth,
					height = realHeight,
					l = this._loading;
					
				l.style.left = left+'px';
				l.style.top = top+'px';
				l.style.width = width+'px';
				l.style.height = height+'px';
				l.style.display = 'inline';
			}
		}).bind(element), timeUntilShow);
	},
	
	// Stop waiting status - hide loading element
	stopWaiting: function(element) {
		if (element._waiting) {
			element._waiting = false;
			element._loading.parentNode.removeChild(element._loading);
			element._loading = null;
		}
	}/*,
	
	_zIndex: 1000000*/
};

/* FUNZIONI UTILI PER IL SISTEMA */

Message = {

	//Visualizza i messaggi di errore
	error: function(element, text, width, fade){	

		if ($(element)){
			type = "error";
			cont = new Element('DIV', {'class' : type});
			left = new Element('DIV', {'class' : type+'_left'});
			center = new Element('DIV', {'class' : type+'_center'});
			right = new Element('DIV', {'class' : type+'_right'});
			cont.update(left);
			cont.insert(center.update(text));
			cont.insert(right);
			$(element).update(cont);
			$(element).setStyle({'width' : (width) ? width : '100%'});
			if(!fade)
				timer = window.setTimeout("right.up('div').fade()", 6000);
			Event.observe(right, "click", function(){
				right.up('div').fade();
				if(!fade)
					window.clearInterval(timer);
			})
			
		}
	},
	
	//Visualizza i messaggi di success
	success: function(element, text, width, fade){	

		if ($(element)){
			type = "success";
			cont = new Element('DIV', {'class' : type});
			left = new Element('DIV', {'class' : type+'_left'});
			center = new Element('DIV', {'class' : type+'_center'});
			right = new Element('DIV', {'class' : type+'_right'});
			cont.update(left);
			cont.insert(center.update(text));
			cont.insert(right);
			$(element).update(cont);
			$(element).setStyle({'width' : (width) ? width : '100%'});
			if(!fade)
				timer = window.setTimeout("right.up('div').fade()", 6000);
			Event.observe(right, "click", function(){
				right.up('div').fade();
				if(!fade)
					window.clearInterval(timer);
			})
			
		}
	},
	
	//Visualizza i messaggi di warning
	warning: function(element, text, width, fade){	

		if ($(element)){
			type = "warning";
			cont = new Element('DIV', {'class' : type});
			left = new Element('DIV', {'class' : type+'_left'});
			center = new Element('DIV', {'class' : type+'_center'});
			right = new Element('DIV', {'class' : type+'_right'});
			cont.update(left);
			cont.insert(center.update(text));
			cont.insert(right);
			$(element).update(cont);
			$(element).setStyle({'width' : (width) ? width : '100%'});
			if(!fade)
				timer = window.setTimeout("right.up('div').fade()", 6000);
			Event.observe(right, "click", function(){
				right.up('div').fade();
				if(!fade)
					window.clearInterval(timer);
			})
			
		}
	},
	
	//Visualizza i messaggi di info
	info: function(element, text, width, fade){	

		if ($(element)){
			type = "info";
			cont = new Element('DIV', {'class' : type});
			left = new Element('DIV', {'class' : type+'_left'});
			center = new Element('DIV', {'class' : type+'_center'});
			right = new Element('DIV', {'class' : type+'_right'});
			cont.update(left);
			cont.insert(center.update(text));
			cont.insert(right);
			$(element).update(cont);
			$(element).setStyle({'width' : (width) ? width : '100%'});
			if(!fade)
				timer = window.setTimeout("right.up('div').fade()", 6000);
			Event.observe(right, "click", function(){
				right.up('div').fade();
				if(!fade)
					window.clearInterval(timer);
			})
			
		}
	}
}

/* ESTENSIONE OGGETTI PROTOTYPE */
if (Prototype) {
	Element.addMethods(Protoload);
	Element.addMethods(Message);
	Object.extend(Element, Protoload);
	Object.extend(Element, Message);
}
/*

IcyEffects plugin

Growl Notification - clone

Author - Becchetti Luca

*/
var Growl = Class.create({

	_count : 0, //counter
	
	_position : 'center',  //right, left, center

	show : function(options){

		 //Set general options
		 this.options = {
		    "id": ("gs"+this._count++),
		    "icon": false,
		    "title": false,
		    "message": "",
		    "cls": "",
		    "speed": 500,
		    "timeout": 3000
		  }
		  Object.extend(this.options, options);
		  
		  //Remove previous
		  if($(this.options.id)){
		    $(this.options.id).remove();
		  }
		  
		  //append status
		  this._getContainer().insert({top:
		    '<div id="'+this.options.id+'" class="growlstatus '+this.options.cls+'" style="display:none;"><div class="growlstatusclose"></div>'+this.options.message+'</div>'
		  });
		  
		  var status = $(this.options.id);
		  
		  //bind close button
		  $$(".growlstatusclose").each(function(g){
		    g.stopObserving();
		    g.observe('click',function(){
		    	this.close(g.up('div').id,true,this.options.speed);
		  	}.bind(this));
		  }.bind(this));
		  
		  //show title
		  if(this.options.title!==false){
		    $(this.options.id).insert({top: '<div class="growltitle">'+this.options.title+'</div>'});
		  }
		  
		  //show icon
		  if(this.options.icon!==false){
		    
		    status.addClassName("growlwithicon");
		    status.addClassName("growlicon_"+this.options.icon);
		  }
		  
		  status.observe("mouseover", function(){
		  	  window.clearTimeout(this.timeout);
		      status.addClassName("growlhover");
		  });
		  
		  status.observe("mouseout", function(){
		      status.removeClassName("growlhover");
		      if(this.options.timeout!==false){
		        this.timeout = window.setTimeout(this.close.bind(this, status.id), this.options.timeout);
		      }
		  }.bind(this)); 
		  
		  status.appear({
		  	onEnded : function(){
		  		if(this.options.timeout!==false){
		  			
		  			this.timeout = window.setTimeout(this.close.bind(this, status.id), this.options.timeout);
		  		}
		  		
		  	}.bind(this)
		  });
		  
		  return this.options.id;
		  
	},
	
	close: function(id,force,speed){
	  
	  
	  if(id == ""){
	    $$(".growlstatus")[0].hide();
	    this._getContainer().hide().remove();
	  }else{
	  	  var myid = id;
	      if( ($(myid) && !$(myid).hasClassName("growlhover")) || force){
	          $(myid).fade({
	          	onEnded : function(){
	          		$(myid).remove();
	          	}
	          });
	      }
	  }
	
	},
	
	_getContainer: function(){
		    
		    if(!$("growlcontainer"+this._position)) {
		      $$('body')[0].insert({top: '<div id="growlcontainer'+this._position+'"></div>'});
		    }
		    
		    return $("growlcontainer"+this._position);
		    
		  
		
	}	

});
/*

IcyEffects plugin

Growl Notification - clone

Author - Becchetti Luca

*/
var News = Class.create({

	_current : 0,
	
	_run : true,
	
	initialize : function(id, options){
	
		this.domObj = $(id);
		
		//Assemblo il layout
		if(this.domObj){
			
			this.news = this.domObj.innerHTML;
			this.domObj.innerHTML = '';
			this.ant = new Element('IMG');
			this.ant.hide();
			this.ant1 = new Element('IMG');
			this.ant1.hide();
			//Scheda corrente
			this.currentSlide = new Element('DIV', {'class' : 'currentslide'});
			//Descrizione
			this.desc = new Element('DIV', {'class' : 'desc'});
			this.desc.hide();
			//Dati
			this.dati = new Element('DIV', {'class' : 'dati'});
			this.desc.setOpacity(0.5);
			//Slide
			this.elenco = new Element('DIV', {'class' : 'elenco'});
			
			this.domObj.insert(this.currentSlide.insert(this.ant).insert(this.ant1).insert(this.desc).insert(this.dati)).insert(this.elenco.insert(this.news));
			
			this.domObj.show();
			
			this.domObj.observe('mouseover', function(){
				this._run = false;
			}.bind(this));
			
			this.domObj.observe('mouseout', function(){
				this._run = true;
			}.bind(this));
			for(i=0; i<this.elenco.select('div').size(); i++){
				this.elenco.select('div')[i].setAttribute("id", "n"+i);
			}
			this.elenco.select('div').each(function(d){
				d.observe('click', function(){
					this._current = parseInt(d.id.replace('n', '')) + 1;
					this.load(d.id.replace('n', ''));
				}.bind(this));
			}.bind(this));
			
			this.start();
		}
	
	},
	
	start : function(){
		
		if(!this._run) return;
	
		if(this._current == 4)
			this._current = 0;
			
		this.load(this._current);
		
		this._current++;
		
		if(!this.interval)
			this.interval = window.setInterval(this.start.bind(this), 5000);
		
		
	},
	
	load : function(current){
		
		
		
		this.desc.setStyle({bottom : '-75px'});
		this.dati.setStyle({bottom : '-75px'});
		this.elenco.select('div').each(function(c){
			c.removeClassName('active');
		});
		if(this.ant.visible()){
			this.ant.hide();
			this.ant.setOpacity(0);
			var loader = new ImageLoader(this.elenco.select('div')[current].down('img').src);				
			loader.loadEvent = function(url, image){
				this.elenco.select('div')[current].addClassName('active');
				this.ant1.setAttribute("src", this.elenco.select('div')[current].down('img').src);
				this.ant1.appear();
				this.dati.update('<h1>' + this.elenco.select('div')[current].down('h2').innerHTML + '</h1>');
				this.dati.insert('<p>' + this.elenco.select('div')[current].down('p').innerHTML + '</p>');
				this.desc.show();
				this.desc.animate({
					'bottom' : 0
				}, 500);
				this.dati.animate({
					'bottom' : 0
				}, 500);					   
			}.bind(this)
			loader.load();
		}else{
			this.ant1.hide();
			this.ant1.setOpacity(0);
			var loader = new ImageLoader(this.elenco.select('div')[current].down('img').src);				
			loader.loadEvent = function(url, image){
				this.elenco.select('div')[current].addClassName('active');
				this.ant.setAttribute("src", this.elenco.select('div')[current].down('img').src);
				this.ant.appear();
				this.dati.update('<h1>' + this.elenco.select('div')[current].down('h2').innerHTML + '</h1>');
				this.dati.insert('<p>' + this.elenco.select('div')[current].down('p').innerHTML + '</p>');
				this.desc.show();
				this.desc.animate({
					'bottom' : 0
				}, 500);
				this.dati.animate({
					'bottom' : 0
				}, 500);					   
			}.bind(this)
			loader.load();
		}
		
		
	
	}

});

/*
simple image loader
*/

function addListener(element, type, expression, bubbling)
{
  bubbling = bubbling || false;
  if(window.addEventListener)	{ // Standard
    element.addEventListener(type, expression, bubbling);
    return true;
  } else if(window.attachEvent) { // IE
    element.attachEvent('on' + type, expression);
    return true;
  } else return false;
}

var ImageLoader = function(url){
  this.url = url;
  this.image = null;
  this.loadEvent = null;
};

ImageLoader.prototype = {
  load:function(){
    this.image = document.createElement('img');
    var url = this.url;
    var image = this.image;
    var loadEvent = this.loadEvent;
    addListener(this.image, 'load', function(e){
      if(loadEvent != null){
        loadEvent(url, image);
      }
    }, false);
    this.image.src = this.url;
  },
  getImage:function(){
    return this.image;
  }
};


Event.observe(window, "load", function(){
 	
 	var n = new News('newscontainer', {});
 	
 	$('menu').down('ul').select('li').each(function(l){
 		
 		l.observe('mouseover', function(){
 			$('cartellino').animate({left: parseInt(l.identify().replace('itm', '')) * 107}, 500);
 			
 		});

 		
 	});	
 	
 	$('menu').down('ul').observe('mouseout', function(){
 		
 		$('cartellino').animate({left: parseInt($$('.actual')[0].identify().replace('itm', '')) * 107}, 500);
 		
 	});
 	
 	if($('squadre')){
 	$('squadre').observe('mouseover', function(){
 		
 		$('squadre').setStyle({'border-left' : '1px solid #ccc','border-right' : '1px solid #ccc','border-bottom' : '5px solid #ccc', 'padding' : '4px'});
 		$('squadre').animate({'height': 600}, 500);
 		
 	});
 	
 	$('squadre').observe('mouseout', function(){
 		
 		$('squadre').setStyle({'border' : '0', 'padding' : '0px'});
 		$('squadre').animate({'height': 240}, 500);
 		
 	});
 	}
 	
 	if($('squadred')){
 	$('squadred').observe('mouseover', function(){
 		
 		$('squadred').setStyle({'border-left' : '1px solid #ccc','border-right' : '1px solid #ccc','border-bottom' : '5px solid #ccc', 'padding' : '4px'});
 		$('squadred').animate({'height': 500}, 500);
 		
 	});
 	
 	$('squadred').observe('mouseout', function(){
 		
 		$('squadred').setStyle({'border' : '0', 'padding' : '0px'});
 		$('squadred').animate({'height': 240}, 500);
 		
 	});
 	}
 	
 	$('colonna1').setStyle({'height' : $('center').getHeight() + 'px'});
 	$('colonna3').setStyle({'height' : $('center').getHeight()-300 + 'px'});
 	
  });