/*  Prototype JavaScript framework, version 1.7.1
 *  (c) 2005-2010 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: '1.7.1',

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/.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'),
		  form = document.createElement('form'),
		  isSupported = false;

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

	  div = form = null;

	  return isSupported;
	})()
},

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

emptyFunction: function() { },

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

if (Prototype.Browser.MobileSafari)
Prototype.BrowserFeatures.SpecificElementExtensions = false;
/* Based on Alex Arnell's inheritance implementation. */

var Class = (function() {

var IS_DONTENUM_BUGGY = (function(){
	for (var p in { toString: 1 }) {
	  if (p === 'toString') return false;
	}
	return true;
})();

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, length = properties.length; i < 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,
		properties = Object.keys(source);

	if (IS_DONTENUM_BUGGY) {
	  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()[0] == "$super") {
		var method = value;
		value = (function(m) {
		  return function() { return ancestor[m].apply(this, arguments); };
		})(property).wrap(method);

		value.valueOf = (function(method) {
		  return function() { return method.valueOf.call(method); };
		})(method);

		value.toString = (function(method) {
		  return function() { return method.toString.call(method); };
		})(method);
	  }
	  this.prototype[property] = value;
	}

	return this;
}

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

var _toString = Object.prototype.toString,
	  _hasOwnProperty = Object.prototype.hasOwnProperty,
	  NULL_TYPE = 'Null',
	  UNDEFINED_TYPE = 'Undefined',
	  BOOLEAN_TYPE = 'Boolean',
	  NUMBER_TYPE = 'Number',
	  STRING_TYPE = 'String',
	  OBJECT_TYPE = 'Object',
	  FUNCTION_CLASS = '[object Function]',
	  BOOLEAN_CLASS = '[object Boolean]',
	  NUMBER_CLASS = '[object Number]',
	  STRING_CLASS = '[object String]',
	  ARRAY_CLASS = '[object Array]',
	  DATE_CLASS = '[object Date]',
	  NATIVE_JSON_STRINGIFY_SUPPORT = window.JSON &&
		typeof JSON.stringify === 'function' &&
		JSON.stringify(0) === '0' &&
		typeof JSON.stringify(Prototype.K) === 'undefined';



var DONT_ENUMS = ['toString', 'toLocaleString', 'valueOf',
'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'constructor'];

var IS_DONTENUM_BUGGY = (function(){
	for (var p in { toString: 1 }) {
	  if (p === 'toString') return false;
	}
	return true;
})();

function Type(o) {
	switch(o) {
	  case null: return NULL_TYPE;
	  case (void 0): return UNDEFINED_TYPE;
	}
	var type = typeof o;
	switch(type) {
	  case 'boolean': return BOOLEAN_TYPE;
	  case 'number':  return NUMBER_TYPE;
	  case 'string':  return STRING_TYPE;
	}
	return OBJECT_TYPE;
}

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(value) {
	return Str('', { '': value }, []);
}

function Str(key, holder, stack) {
	var value = holder[key];
	if (Type(value) === OBJECT_TYPE && typeof value.toJSON === 'function') {
	  value = value.toJSON(key);
	}

	var _class = _toString.call(value);

	switch (_class) {
	  case NUMBER_CLASS:
	  case BOOLEAN_CLASS:
	  case STRING_CLASS:
		value = value.valueOf();
	}

	switch (value) {
	  case null: return 'null';
	  case true: return 'true';
	  case false: return 'false';
	}

	var type = typeof value;
	switch (type) {
	  case 'string':
		return value.inspect(true);
	  case 'number':
		return isFinite(value) ? String(value) : 'null';
	  case 'object':

		for (var i = 0, length = stack.length; i < length; i++) {
		  if (stack[i] === value) {
			throw new TypeError("Cyclic reference to '" + value + "' in object");
		  }
		}
		stack.push(value);

		var partial = [];
		if (_class === ARRAY_CLASS) {
		  for (var i = 0, length = value.length; i < length; i++) {
			var str = Str(i, value, stack);
			partial.push(typeof str === 'undefined' ? 'null' : str);
		  }
		  partial = '[' + partial.join(',') + ']';
		} else {
		  var keys = Object.keys(value);
		  for (var i = 0, length = keys.length; i < length; i++) {
			var key = keys[i], str = Str(key, value, stack);
			if (typeof str !== "undefined") {
			   partial.push(key.inspect(true)+ ':' + str);
			 }
		  }
		  partial = '{' + partial.join(',') + '}';
		}
		stack.pop();
		return partial;
	}
}

function stringify(object) {
	return JSON.stringify(object);
}

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

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

function keys(object) {
	if (Type(object) !== OBJECT_TYPE) { throw new TypeError(); }
	var results = [];
	for (var property in object) {
	  if (_hasOwnProperty.call(object, property))
		results.push(property);
	}

	if (IS_DONTENUM_BUGGY) {
	  for (var i = 0; property = DONT_ENUMS[i]; i++) {
		if (_hasOwnProperty.call(object, property))
		  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) === ARRAY_CLASS;
}

var hasNativeIsArray = (typeof Array.isArray == 'function')
	&& Array.isArray([]) && !Array.isArray({});

if (hasNativeIsArray) {
	isArray = Array.isArray;
}

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

function isFunction(object) {
	return _toString.call(object) === FUNCTION_CLASS;
}

function isString(object) {
	return _toString.call(object) === STRING_CLASS;
}

function isNumber(object) {
	return _toString.call(object) === NUMBER_CLASS;
}

function isDate(object) {
	return _toString.call(object) === DATE_CLASS;
}

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

extend(Object, {
	extend:        extend,
	inspect:       inspect,
	toJSON:        NATIVE_JSON_STRINGIFY_SUPPORT ? stringify : toJSON,
	toQueryString: toQueryString,
	toHTML:        toHTML,
	keys:          Object.keys || keys,
	values:        values,
	clone:         clone,
	isElement:     isElement,
	isArray:       isArray,
	isHash:        isHash,
	isFunction:    isFunction,
	isString:      isString,
	isNumber:      isNumber,
	isDate:        isDate,
	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;

	if (!Object.isFunction(this))
	  throw new TypeError("The object is not callable.");

	var nop = function() {};
	var __method = this, args = slice.call(arguments, 1);

	var bound = function() {
	  var a = merge(args, arguments), c = context;
	  var c = this instanceof bound ? this : context;
	  return __method.apply(c, a);
	};

	nop.prototype   = this.prototype;
	bound.prototype = new nop();

	return bound;
}

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);
	};
}

var extensions = {
	argumentNames:       argumentNames,
	bindAsEventListener: bindAsEventListener,
	curry:               curry,
	delay:               delay,
	defer:               defer,
	wrap:                wrap,
	methodize:           methodize
};

if (!Function.prototype.bind)
	extensions.bind = bind;

return extensions;
})());



(function(proto) {


function toISOString() {
	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';
}


function toJSON() {
	return this.toISOString();
}

if (!proto.toISOString) proto.toISOString = toISOString;
if (!proto.toJSON) proto.toJSON = toJSON;

})(Date.prototype);


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() {
var NATIVE_JSON_PARSE_SUPPORT = window.JSON &&
	typeof JSON.parse === 'function' &&
	JSON.parse('{"test": true}').test;

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'),
		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()),
			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() {
	return this.replace(/-+(.)?/g, function(match, chr) {
	  return chr ? chr.toUpperCase() : '';
	});
}

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 unfilterJSON(filter) {
	return this.replace(filter || Prototype.JSONFilter, '$1');
}

function isJSON() {
	var str = this;
	if (str.blank()) return false;
	str = str.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@');
	str = str.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']');
	str = str.replace(/(?:^|:|,)(?:\s*\[)+/g, '');
	return (/^[\],:{}\s]*$/).test(str);
}

function evalJSON(sanitize) {
	var json = this.unfilterJSON(),
		cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
	if (cx.test(json)) {
	  json = json.replace(cx, function (a) {
		return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
	  });
	}
	try {
	  if (!sanitize || json.isJSON()) return eval('(' + json + ')');
	} catch (e) { }
	throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
}

function parseJSON() {
	var json = this.unfilterJSON();
	return JSON.parse(json);
}

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

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

function endsWith(pattern) {
	var d = this.length - pattern.length;
	return d >= 0 && this.indexOf(pattern, d) === 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 || 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,
	unfilterJSON:   unfilterJSON,
	isJSON:         isJSON,
	evalJSON:       NATIVE_JSON_PARSE_SUPPORT ? parseJSON : 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],
		  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) {
	try {
	  this._each(iterator, context);
	} 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, this);
	  if (!result) throw $break;
	}, this);
	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, this))
		throw $break;
	}, this);
	return result;
}

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

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

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

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

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

function sortBy(iterator, context) {
	return this.map(function(value, index) {
	  return {
		value: value,
		criteria: iterator.call(context, value, index, this)
	  };
	}, this).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, context) {
	for (var i = 0, length = this.length >>> 0; i < length; i++) {
	  if (i in this) iterator.call(context, this[i], i, this);
	}
}
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.toArray() : this)._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.indexOf(item) !== -1;
	});
}


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

function size() {
	return this.length;
}

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

function indexOf(item, i) {
	if (this == null) throw new TypeError();

	var array = Object(this), length = array.length >>> 0;
	if (length === 0) return -1;

	i = Number(i);
	if (isNaN(i)) {
	  i = 0;
	} else if (i !== 0 && isFinite(i)) {
	  i = (i > 0 ? 1 : -1) * Math.floor(Math.abs(i));
	}

	if (i > length) return -1;

	var k = i >= 0 ? i : Math.max(length - Math.abs(i), 0);
	for (; k < length; k++)
	  if (k in array && array[k] === item) return k;
	return -1;
}


function lastIndexOf(item, i) {
	if (this == null) throw new TypeError();

	var array = Object(this), length = array.length >>> 0;
	if (length === 0) return -1;

	if (!Object.isUndefined(i)) {
	  i = Number(i);
	  if (isNaN(i)) {
		i = 0;
	  } else if (i !== 0 && isFinite(i)) {
		i = (i > 0 ? 1 : -1) * Math.floor(Math.abs(i));
	  }
	} else {
	  i = length;
	}

	var k = i >= 0 ? Math.min(i, length - 1) :
	 length - Math.abs(i);

	for (; k >= 0; k--)
	  if (k in array && array[k] === item) return k;
	return -1;
}

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


function wrapNative(method) {
	return function() {
	  if (arguments.length === 0) {
		return method.call(this, Prototype.K);
	  } else if (arguments[0] === undefined) {
		var args = slice.call(arguments, 1);
		args.unshift(Prototype.K);
		return method.apply(this, args);
	  } else {
		return method.apply(this, arguments);
	  }
	};
}


function map(iterator) {
	if (this == null) throw new TypeError();
	iterator = iterator || Prototype.K;

	var object = Object(this);
	var results = [], context = arguments[1], n = 0;

	for (var i = 0, length = object.length >>> 0; i < length; i++) {
	  if (i in object) {
		results[n] = iterator.call(context, object[i], i, object);
	  }
	  n++;
	}
	results.length = n;
	return results;
}

if (arrayProto.map) {
	map = wrapNative(Array.prototype.map);
}

function filter(iterator) {
	if (this == null || !Object.isFunction(iterator))
	  throw new TypeError();

	var object = Object(this);
	var results = [], context = arguments[1], value;

	for (var i = 0, length = object.length >>> 0; i < length; i++) {
	  if (i in object) {
		value = object[i];
		if (iterator.call(context, value, i, object)) {
		  results.push(value);
		}
	  }
	}
	return results;
}

if (arrayProto.filter) {
	filter = Array.prototype.filter;
}

function some(iterator) {
	if (this == null) throw new TypeError();
	iterator = iterator || Prototype.K;
	var context = arguments[1];

	var object = Object(this);
	for (var i = 0, length = object.length >>> 0; i < length; i++) {
	  if (i in object && iterator.call(context, object[i], i, object)) {
		return true;
	  }
	}

	return false;
}

if (arrayProto.some) {
	var some = wrapNative(Array.prototype.some);
}


function every(iterator) {
	if (this == null) throw new TypeError();
	iterator = iterator || Prototype.K;
	var context = arguments[1];

	var object = Object(this);
	for (var i = 0, length = object.length >>> 0; i < length; i++) {
	  if (i in object && !iterator.call(context, object[i], i, object)) {
		return false;
	  }
	}

	return true;
}

if (arrayProto.every) {
	var every = wrapNative(Array.prototype.every);
}

var _reduce = arrayProto.reduce;
function inject(memo, iterator) {
	iterator = iterator || Prototype.K;
	var context = arguments[2];
	return _reduce.call(this, iterator.bind(context), memo);
}

if (!arrayProto.reduce) {
	var inject = Enumerable.inject;
}

Object.extend(arrayProto, Enumerable);

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

Object.extend(arrayProto, {
	_each:     _each,

	map:       map,
	collect:   map,
	select:    filter,
	filter:    filter,
	findAll:   filter,
	some:      some,
	any:       some,
	every:     every,
	all:       every,
	inject:    inject,

	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
});

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, context) {
	for (var key in this._object) {
	  var value = this._object[key], pair = [key, value];
	  pair.key = key;
	  pair.value = value;
	  iterator.call(context, 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;

	var value = String.interpret(value);

	value = value.gsub(/(\r)?\n/, '\r\n');
	value = encodeURIComponent(value);
	value = value.gsub(/%20/, '+');
	return key + '=' + 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)) {
		  var queryValues = [];
		  for (var i = 0, len = values.length, value; i < len; i++) {
			value = values[i];
			queryValues.push(toQueryPair(key, value));
		  }
		  return results.concat(queryValues);
		}
	  } 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 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:                 toObject,
	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 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,
	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, context) {
	var value = this.start;
	while (this.include(value)) {
	  iterator.call(context, 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 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;
}
};

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, context) {
	this.responders._each(iterator, context);
},

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.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.isString(this.options.parameters) ?
		  this.options.parameters :
		  Object.toQueryString(this.options.parameters);

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

	if (params && this.method === 'get') {
	  this.url += (this.url.include('?') ? '&' : '?') + params;
	}

	this.parameters = params.toQueryParams();

	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) || status == 304;
},

getStatus: function() {
	try {
	  if (this.transport.status === 1223) return 204;
	  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;

	try {
	  json = decodeURIComponent(escape(json));
	} catch(e) {
	}

	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(GLOBAL) {

var UNDEFINED;
var SLICE = Array.prototype.slice;

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


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);
}

GLOBAL.$ = $;


if (!GLOBAL.Node) GLOBAL.Node = {};

if (!GLOBAL.Node.ELEMENT_NODE) {
	Object.extend(GLOBAL.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
	});
}

var ELEMENT_CACHE = {};

function shouldUseCreationCache(tagName, attributes) {
	if (tagName === 'select') return false;
	if ('type' in attributes) return false;
	return true;
}

var HAS_EXTENDED_CREATE_ELEMENT_SYNTAX = (function(){
	try {
	  var el = document.createElement('<input name="x">');
	  return el.tagName.toLowerCase() === 'input' && el.name === 'x';
	}
	catch(err) {
	  return false;
	}
})();


var oldElement = GLOBAL.Element;
function Element(tagName, attributes) {
	attributes = attributes || {};
	tagName = tagName.toLowerCase();

	if (HAS_EXTENDED_CREATE_ELEMENT_SYNTAX && attributes.name) {
	  tagName = '<' + tagName + ' name="' + attributes.name + '">';
	  delete attributes.name;
	  return Element.writeAttribute(document.createElement(tagName), attributes);
	}

	if (!ELEMENT_CACHE[tagName])
	  ELEMENT_CACHE[tagName] = Element.extend(document.createElement(tagName));

	var node = shouldUseCreationCache(tagName, attributes) ?
	 ELEMENT_CACHE[tagName].cloneNode(false) : document.createElement(tagName);

	return Element.writeAttribute(node, attributes);
}

GLOBAL.Element = Element;

Object.extend(GLOBAL.Element, oldElement || {});
if (oldElement) GLOBAL.Element.prototype = oldElement.prototype;

Element.Methods = { ByTag: {}, Simulated: {} };

var methods = {};

var INSPECT_ATTRIBUTES = { id: 'id', className: 'class' };
function inspect(element) {
	element = $(element);
	var result = '<' + element.tagName.toLowerCase();

	var attribute, value;
	for (var property in INSPECT_ATTRIBUTES) {
	  attribute = INSPECT_ATTRIBUTES[property];
	  value = (element[property] || '').toString();
	  if (value) result += ' ' + attribute + '=' + value.inspect(true);
	}

	return result + '>';
}

methods.inspect = inspect;


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

function toggle(element, bool) {
	element = $(element);
	if (Object.isUndefined(bool))
	  bool = !Element.visible(element);
	Element[bool ? 'show' : 'hide'](element);

	return element;
}

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

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


Object.extend(methods, {
	visible: visible,
	toggle:  toggle,
	hide:    hide,
	show:    show
});


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

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 LINK_ELEMENT_INNERHTML_BUGGY = (function() {
	try {
	  var el = document.createElement('div');
	  el.innerHTML = "<link />";
	  var isBuggy = (el.childNodes.length === 0);
	  el = null;
	  return isBuggy;
	} catch(e) {
	  return true;
	}
})();

var ANY_INNERHTML_BUGGY = SELECT_ELEMENT_INNERHTML_BUGGY ||
TABLE_ELEMENT_INNERHTML_BUGGY || LINK_ELEMENT_INNERHTML_BUGGY;

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);

	var descendants = element.getElementsByTagName('*'),
	 i = descendants.length;
	while (i--) purgeElement(descendants[i]);

	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 (ANY_INNERHTML_BUGGY) {
	  if (tagName in INSERTION_TRANSLATIONS.tags) {
		while (element.firstChild)
		  element.removeChild(element.firstChild);

		var nodes = getContentFromAnonymousElement(tagName, content.stripScripts());
		for (var i = 0, node; node = nodes[i]; i++)
		  element.appendChild(node);

	  } else if (LINK_ELEMENT_INNERHTML_BUGGY && Object.isString(content) && content.indexOf('<link') > -1) {
		while (element.firstChild)
		  element.removeChild(element.firstChild);

		var nodes = getContentFromAnonymousElement(tagName,
		 content.stripScripts(), true);

		for (var i = 0, node; node = nodes[i]; i++)
		  element.appendChild(node);
	  } else {
		element.innerHTML = content.stripScripts();
	  }
	} else {
	  element.innerHTML = content.stripScripts();
	}

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

function replace(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;
}

var INSERTION_TRANSLATIONS = {
	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]
	}
};

var tags = INSERTION_TRANSLATIONS.tags;

Object.extend(tags, {
	THEAD: tags.TBODY,
	TFOOT: tags.TBODY,
	TH:    tags.TD
});

function replace_IE(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 (tagName in INSERTION_TRANSLATIONS.tags) {
	  var nextSibling = Element.next(element);
	  var fragments = getContentFromAnonymousElement(
	   tagName, content.stripScripts());

	  parent.removeChild(element);

	  var iterator;
	  if (nextSibling)
		iterator = function(node) { parent.insertBefore(node, nextSibling) };
	  else
		iterator = function(node) { parent.appendChild(node); }

	  fragments.each(iterator);
	} else {
	  element.outerHTML = content.stripScripts();
	}

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

if ('outerHTML' in document.documentElement)
	replace = replace_IE;

function isContent(content) {
	if (Object.isUndefined(content) || content === null) return false;

	if (Object.isString(content) || Object.isNumber(content)) return true;
	if (Object.isElement(content)) return true;
	if (content.toElement || content.toHTML) return true;

	return false;
}

function insertContentAt(element, content, position) {
	position   = position.toLowerCase();
	var method = INSERTION_TRANSLATIONS[position];

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

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

	var childNodes = getContentFromAnonymousElement(tagName, content.stripScripts());

	if (position === 'top' || position === 'after') childNodes.reverse();

	for (var i = 0, node; node = childNodes[i]; i++)
	  method(element, node);

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

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

	if (isContent(insertions))
	  insertions = { bottom: insertions };

	for (var position in insertions)
	  insertContentAt(element, insertions[position], position);

	return element;
}

function wrap(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;
}

function cleanWhitespace(element) {
	element = $(element);
	var node = element.firstChild;

	while (node) {
	  var nextNode = node.nextSibling;
	  if (node.nodeType === Node.TEXT_NODE && !/\S/.test(node.nodeValue))
		element.removeChild(node);
	  node = nextNode;
	}
	return element;
}

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

function getContentFromAnonymousElement(tagName, html, force) {
	var t = INSERTION_TRANSLATIONS.tags[tagName], div = DIV;

	var workaround = !!t;
	if (!workaround && force) {
	  workaround = true;
	  t = ['', '', 0];
	}

	if (workaround) {
	  div.innerHTML = '&#160;' + t[0] + html + t[1];
	  div.removeChild(div.firstChild);
	  for (var i = t[2]; i--; )
		div = div.firstChild;
	} else {
	  div.innerHTML = html;
	}

	return $A(div.childNodes);
}

function clone(element, deep) {
	if (!(element = $(element))) return;
	var clone = element.cloneNode(deep);
	if (!HAS_UNIQUE_ID_PROPERTY) {
	  clone._prototypeUID = UNDEFINED;
	  if (deep) {
		var descendants = Element.select(clone, '*'),
		 i = descendants.length;
		while (i--)
		  descendants[i]._prototypeUID = UNDEFINED;
	  }
	}
	return Element.extend(clone);
}

function purgeElement(element) {
	var uid = getUniqueElementID(element);
	if (uid) {
	  Element.stopObserving(element);
	  if (!HAS_UNIQUE_ID_PROPERTY)
		element._prototypeUID = UNDEFINED;
	  delete Element.Storage[uid];
	}
}

function purgeCollection(elements) {
	var i = elements.length;
	while (i--)
	  purgeElement(elements[i]);
}

function purgeCollection_IE(elements) {
	var i = elements.length, element, uid;
	while (i--) {
	  element = elements[i];
	  uid = getUniqueElementID(element);
	  delete Element.Storage[uid];
	  delete Event.cache[uid];
	}
}

if (HAS_UNIQUE_ID_PROPERTY) {
	purgeCollection = purgeCollection_IE;
}


function purge(element) {
	if (!(element = $(element))) return;
	purgeElement(element);

	var descendants = element.getElementsByTagName('*'),
	 i = descendants.length;

	while (i--) purgeElement(descendants[i]);

	return null;
}

Object.extend(methods, {
	remove:  remove,
	update:  update,
	replace: replace,
	insert:  insert,
	wrap:    wrap,
	cleanWhitespace: cleanWhitespace,
	empty:   empty,
	clone:   clone,
	purge:   purge
});



function recursivelyCollect(element, property, maximumLength) {
	element = $(element);
	maximumLength = maximumLength || -1;
	var elements = [];

	while (element = element[property]) {
	  if (element.nodeType === Node.ELEMENT_NODE)
		elements.push(Element.extend(element));

	  if (elements.length === maximumLength) break;
	}

	return elements;
}


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

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

function firstDescendant(element) {
	element = $(element).firstChild;
	while (element && element.nodeType !== Node.ELEMENT_NODE)
	  element = element.nextSibling;

	return $(element);
}

function immediateDescendants(element) {
	var results = [], child = $(element).firstChild;

	while (child) {
	  if (child.nodeType === Node.ELEMENT_NODE)
		results.push(Element.extend(child));

	  child = child.nextSibling;
	}

	return results;
}

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

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

function siblings(element) {
	element = $(element);
	var previous = previousSiblings(element),
	 next = nextSiblings(element);
	return previous.reverse().concat(next);
}

function match(element, selector) {
	element = $(element);

	if (Object.isString(selector))
	  return Prototype.Selector.match(element, selector);

	return selector.match(element);
}


function _recursivelyFind(element, property, expression, index) {
	element = $(element), expression = expression || 0, index = index || 0;
	if (Object.isNumber(expression)) {
	  index = expression, expression = null;
	}

	while (element = element[property]) {
	  if (element.nodeType !== 1) continue;
	  if (expression && !Prototype.Selector.match(element, expression))
		continue;
	  if (--index >= 0) continue;

	  return Element.extend(element);
	}
}


function up(element, expression, index) {
	element = $(element);

	if (arguments.length === 1) return $(element.parentNode);
	return _recursivelyFind(element, 'parentNode', expression, index);
}

function down(element, expression, index) {
	element = $(element), expression = expression || 0, index = index || 0;

	if (Object.isNumber(expression))
	  index = expression, expression = '*';

	var node = Prototype.Selector.select(expression, element)[index];
	return Element.extend(node);
}

function previous(element, expression, index) {
	return _recursivelyFind(element, 'previousSibling', expression, index);
}

function next(element, expression, index) {
	return _recursivelyFind(element, 'nextSibling', expression, index);
}

function select(element) {
	element = $(element);
	var expressions = SLICE.call(arguments, 1).join(', ');
	return Prototype.Selector.select(expressions, element);
}

function adjacent(element) {
	element = $(element);
	var expressions = SLICE.call(arguments, 1).join(', ');
	var siblings = Element.siblings(element), results = [];
	for (var i = 0, sibling; sibling = siblings[i]; i++) {
	  if (Prototype.Selector.match(sibling, expressions))
		results.push(sibling);
	}

	return results;
}

function descendantOf_DOM(element, ancestor) {
	element = $(element), ancestor = $(ancestor);
	while (element = element.parentNode)
	  if (element === ancestor) return true;
	return false;
}

function descendantOf_contains(element, ancestor) {
	element = $(element), ancestor = $(ancestor);
	if (!ancestor.contains) return descendantOf_DOM(element, ancestor);
	return ancestor.contains(element) && ancestor !== element;
}

function descendantOf_compareDocumentPosition(element, ancestor) {
	element = $(element), ancestor = $(ancestor);
	return (element.compareDocumentPosition(ancestor) & 8) === 8;
}

var descendantOf;
if (DIV.compareDocumentPosition) {
	descendantOf = descendantOf_compareDocumentPosition;
} else if (DIV.contains) {
	descendantOf = descendantOf_contains;
} else {
	descendantOf = descendantOf_DOM;
}


Object.extend(methods, {
	recursivelyCollect:   recursivelyCollect,
	ancestors:            ancestors,
	descendants:          descendants,
	firstDescendant:      firstDescendant,
	immediateDescendants: immediateDescendants,
	previousSiblings:     previousSiblings,
	nextSiblings:         nextSiblings,
	siblings:             siblings,
	match:                match,
	up:                   up,
	down:                 down,
	previous:             previous,
	next:                 next,
	select:               select,
	adjacent:             adjacent,
	descendantOf:         descendantOf,

	getElementsBySelector: select,

	childElements:         immediateDescendants
});


var idCounter = 1;
function identify(element) {
	element = $(element);
	var id = Element.readAttribute(element, 'id');
	if (id) return id;

	do { id = 'anonymous_element_' + idCounter++ } while ($(id));

	Element.writeAttribute(element, 'id', id);
	return id;
}


function readAttribute(element, name) {
	return $(element).getAttribute(name);
}

function readAttribute_IE(element, name) {
	element = $(element);

	var table = ATTRIBUTE_TRANSLATIONS.read;
	if (table.values[name])
	  return table.values[name](element, name);

	if (table.names[name]) name = table.names[name];

	if (name.include(':')) {
	  if (!element.attributes || !element.attributes[name]) return null;
	  return element.attributes[name].value;
	}

	return element.getAttribute(name);
}

function readAttribute_Opera(element, name) {
	if (name === 'title') return element.title;
	return element.getAttribute(name);
}

var PROBLEMATIC_ATTRIBUTE_READING = (function() {
	DIV.setAttribute('onclick', Prototype.emptyFunction);
	var value = DIV.getAttribute('onclick');
	var isFunction = (typeof value === 'function');
	DIV.removeAttribute('onclick');
	return isFunction;
})();

if (PROBLEMATIC_ATTRIBUTE_READING) {
	readAttribute = readAttribute_IE;
} else if (Prototype.Browser.Opera) {
	readAttribute = readAttribute_Opera;
}


function writeAttribute(element, name, value) {
	element = $(element);
	var attributes = {}, table = ATTRIBUTE_TRANSLATIONS.write;

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

	for (var attr in attributes) {
	  name = table.names[attr] || attr;
	  value = attributes[attr];
	  if (table.values[attr])
		name = table.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;
}

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

GLOBAL.Element.Methods.Simulated.hasAttribute = hasAttribute;

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

var regExpCache = {};
function getRegExpForClassName(className) {
	if (regExpCache[className]) return regExpCache[className];

	var re = new RegExp("(^|\\s+)" + className + "(\\s+|$)");
	regExpCache[className] = re;
	return re;
}

function hasClassName(element, className) {
	if (!(element = $(element))) return;

	var elementClassName = element.className;

	if (elementClassName.length === 0) return false;
	if (elementClassName === className) return true;

	return getRegExpForClassName(className).test(elementClassName);
}

function addClassName(element, className) {
	if (!(element = $(element))) return;

	if (!hasClassName(element, className))
	  element.className += (element.className ? ' ' : '') + className;

	return element;
}

function removeClassName(element, className) {
	if (!(element = $(element))) return;

	element.className = element.className.replace(
	 getRegExpForClassName(className), ' ').strip();

	return element;
}

function toggleClassName(element, className, bool) {
	if (!(element = $(element))) return;

	if (Object.isUndefined(bool))
	  bool = !hasClassName(element, className);

	var method = Element[bool ? 'addClassName' : 'removeClassName'];
	return method(element, className);
}

var ATTRIBUTE_TRANSLATIONS = {};

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

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

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

function _getAttr(element, attribute) {
	return element.getAttribute(attribute);
}

function _getAttr2(element, attribute) {
	return element.getAttribute(attribute, 2);
}

function _getAttrNode(element, attribute) {
	var node = element.getAttributeNode(attribute);
	return node ? node.value : '';
}

function _getFlag(element, attribute) {
	return $(element).hasAttribute(attribute) ? attribute : null;
}

DIV.onclick = Prototype.emptyFunction;
var onclickValue = DIV.getAttribute('onclick');

var _getEv;

if (String(onclickValue).indexOf('{') > -1) {
	_getEv = function(element, attribute) {
	  var value = element.getAttribute(attribute);
	  if (!value) return null;
	  value = value.toString();
	  value = value.split('{')[1];
	  value = value.split('}')[0];
	  return value.strip();
	};
}
else if (onclickValue === '') {
	_getEv = function(element, attribute) {
	  var value = element.getAttribute(attribute);
	  if (!value) return null;
	  return value.strip();
	};
}

ATTRIBUTE_TRANSLATIONS.read = {
	names: {
	  'class':     classProp,
	  'className': classProp,
	  'for':       forProp,
	  'htmlFor':   forProp
	},

	values: {
	  style: function(element) {
		return element.style.cssText.toLowerCase();
	  },
	  title: function(element) {
		return element.title;
	  }
	}
};

ATTRIBUTE_TRANSLATIONS.write = {
	names: {
	  className:   'class',
	  htmlFor:     'for',
	  cellpadding: 'cellPadding',
	  cellspacing: 'cellSpacing'
	},

	values: {
	  checked: function(element, value) {
		element.checked = !!value;
	  },

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

ATTRIBUTE_TRANSLATIONS.has = { names: {} };

Object.extend(ATTRIBUTE_TRANSLATIONS.write.names,
ATTRIBUTE_TRANSLATIONS.read.names);

var CAMEL_CASED_ATTRIBUTE_NAMES = $w('colSpan rowSpan vAlign dateTime ' +
'accessKey tabIndex encType maxLength readOnly longDesc frameBorder');

for (var i = 0, attr; attr = CAMEL_CASED_ATTRIBUTE_NAMES[i]; i++) {
	ATTRIBUTE_TRANSLATIONS.write.names[attr.toLowerCase()] = attr;
	ATTRIBUTE_TRANSLATIONS.has.names[attr.toLowerCase()]   = attr;
}

Object.extend(ATTRIBUTE_TRANSLATIONS.read.values, {
	href:        _getAttr2,
	src:         _getAttr2,
	type:        _getAttr,
	action:      _getAttrNode,
	disabled:    _getFlag,
	checked:     _getFlag,
	readonly:    _getFlag,
	multiple:    _getFlag,
	onload:      _getEv,
	onunload:    _getEv,
	onclick:     _getEv,
	ondblclick:  _getEv,
	onmousedown: _getEv,
	onmouseup:   _getEv,
	onmouseover: _getEv,
	onmousemove: _getEv,
	onmouseout:  _getEv,
	onfocus:     _getEv,
	onblur:      _getEv,
	onkeypress:  _getEv,
	onkeydown:   _getEv,
	onkeyup:     _getEv,
	onsubmit:    _getEv,
	onreset:     _getEv,
	onselect:    _getEv,
	onchange:    _getEv
});


Object.extend(methods, {
	identify:        identify,
	readAttribute:   readAttribute,
	writeAttribute:  writeAttribute,
	classNames:      classNames,
	hasClassName:    hasClassName,
	addClassName:    addClassName,
	removeClassName: removeClassName,
	toggleClassName: toggleClassName
});


function normalizeStyleName(style) {
	if (style === 'float' || style === 'styleFloat')
	  return 'cssFloat';
	return style.camelize();
}

function normalizeStyleName_IE(style) {
	if (style === 'float' || style === 'cssFloat')
	  return 'styleFloat';
	return style.camelize();
}

function setStyle(element, styles) {
	element = $(element);
	var elementStyle = element.style, match;

	if (Object.isString(styles)) {
	  elementStyle.cssText += ';' + styles;
	  if (styles.include('opacity')) {
		var opacity = styles.match(/opacity:\s*(\d?\.?\d*)/)[1];
		Element.setOpacity(element, opacity);
	  }
	  return element;
	}

	for (var property in styles) {
	  if (property === 'opacity') {
		Element.setOpacity(element, styles[property]);
	  } else {
		var value = styles[property];
		if (property === 'float' || property === 'cssFloat') {
		  property = Object.isUndefined(elementStyle.styleFloat) ?
		   'cssFloat' : 'styleFloat';
		}
		elementStyle[property] = value;
	  }
	}

	return element;
}


function getStyle(element, style) {
	element = $(element);
	style = normalizeStyleName(style);

	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;
}

function getStyle_Opera(element, style) {
	switch (style) {
	  case 'height': case 'width':
		if (!Element.visible(element)) return null;

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

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

		return Element.measure(element, style);

	  default: return getStyle(element, style);
	}
}

function getStyle_IE(element, style) {
	element = $(element);
	style = normalizeStyleName_IE(style);

	var value = element.style[style];
	if (!value && element.currentStyle) {
	  value = element.currentStyle[style];
	}

	if (style === 'opacity' && !STANDARD_CSS_OPACITY_SUPPORTED)
	  return getOpacity_IE(element);

	if (value === 'auto') {
	  if ((style === 'width' || style === 'height') && Element.visible(element))
		return Element.measure(element, style) + 'px';
	  return null;
	}

	return value;
}

function stripAlphaFromFilter_IE(filter) {
	return (filter || '').replace(/alpha\([^\)]*\)/gi, '');
}

function hasLayout_IE(element) {
	if (!element.currentStyle.hasLayout)
	  element.style.zoom = 1;
	return element;
}

var STANDARD_CSS_OPACITY_SUPPORTED = (function() {
	DIV.style.cssText = "opacity:.55";
	return /^0.55/.test(DIV.style.opacity);
})();

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

function setOpacity_IE(element, value) {
	if (STANDARD_CSS_OPACITY_SUPPORTED)
	  return setOpacity(element, value);

	element = hasLayout_IE($(element));
	var filter = Element.getStyle(element, 'filter'),
	 style = element.style;

	if (value == 1 || value === '') {
	  filter = stripAlphaFromFilter_IE(filter);
	  if (filter) style.filter = filter;
	  else style.removeAttribute('filter');
	  return element;
	}

	if (value < 0.00001) value = 0;

	style.filter = stripAlphaFromFilter_IE(filter) +
	 'alpha(opacity=' + (value * 100) + ')';

	return element;
}


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

function getOpacity_IE(element) {
	if (STANDARD_CSS_OPACITY_SUPPORTED)
	  return getOpacity(element);

	var filter = Element.getStyle(element, 'filter');
	if (filter.length === 0) return 1.0;
	var match = (filter || '').match(/alpha\(opacity=(.*)\)/);
	if (match[1]) return parseFloat(match[1]) / 100;
	return 1.0;
}


Object.extend(methods, {
	setStyle:   setStyle,
	getStyle:   getStyle,
	setOpacity: setOpacity,
	getOpacity: getOpacity
});

if ('styleFloat' in DIV.style) {
	methods.getStyle = getStyle_IE;
	methods.setOpacity = setOpacity_IE;
	methods.getOpacity = getOpacity_IE;
}

var UID = 0;

GLOBAL.Element.Storage = { UID: 1 };

function getUniqueElementID(element) {
	if (element === window) return 0;

	if (typeof element._prototypeUID === 'undefined')
	  element._prototypeUID = Element.Storage.UID++;
	return element._prototypeUID;
}

function getUniqueElementID_IE(element) {
	if (element === window) return 0;
	if (element == document) return 1;
	return element.uniqueID;
}

var HAS_UNIQUE_ID_PROPERTY = ('uniqueID' in DIV);
if (HAS_UNIQUE_ID_PROPERTY)
	getUniqueElementID = getUniqueElementID_IE;

function getStorage(element) {
	if (!(element = $(element))) return;

	var uid = getUniqueElementID(element);

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

	return Element.Storage[uid];
}

function store(element, key, value) {
	if (!(element = $(element))) return;
	var storage = getStorage(element);
	if (arguments.length === 2) {
	  storage.update(key);
	} else {
	  storage.set(key, value);
	}
	return element;
}

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

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

	return value;
}


Object.extend(methods, {
	getStorage: getStorage,
	store:      store,
	retrieve:   retrieve
});


var Methods = {}, ByTag = Element.Methods.ByTag,
F = Prototype.BrowserFeatures;

if (!F.ElementExtensions && ('__proto__' in DIV)) {
	GLOBAL.HTMLElement = {};
	GLOBAL.HTMLElement.prototype = DIV['__proto__'];
	F.ElementExtensions = true;
}

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

	return false;
}

var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY =
checkElementPrototypeDeficiency('object');

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 EXTENDED = {};
function elementIsExtended(element) {
	var uid = getUniqueElementID(element);
	return (uid in EXTENDED);
}

function extend(element) {
	if (!element || elementIsExtended(element)) return element;
	if (element.nodeType !== Node.ELEMENT_NODE || element == window)
	  return element;

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

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

	extendElementWith(element, methods);
	EXTENDED[getUniqueElementID(element)] = true;
	return element;
}

function extend_IE8(element) {
	if (!element || elementIsExtended(element)) return element;

	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;
}

if (F.SpecificElementExtensions) {
	extend = HTMLOBJECTELEMENT_PROTOTYPE_BUGGY ? extend_IE8 : Prototype.K;
}

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

function mergeMethods(destination, methods, onlyIfAbsent) {
	if (Object.isUndefined(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),
	 proto = element['__proto__'] || element.constructor.prototype;

	element = null;
	return proto;
}

function addMethods(methods) {
	if (arguments.length === 0) addFormMethods();

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

	if (!tagName) {
	  Object.extend(Element.Methods, methods || {});
	} else {
	  if (Object.isArray(tagName)) {
		for (var i = 0, tag; tag = tagName[i]; i++)
		  addMethodsToTagName(tag, methods);
	  } else {
		addMethodsToTagName(tagName, methods);
	  }
	}

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

	if (F.ElementExtensions) {
	  mergeMethods(ELEMENT_PROTOTYPE, Element.Methods);
	  mergeMethods(ELEMENT_PROTOTYPE, Element.Methods.Simulated, true);
	}

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

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

	Element.extend.refresh();

	ELEMENT_CACHE = {};
}

Object.extend(GLOBAL.Element, {
	extend:     extend,
	addMethods: addMethods
});

if (extend === Prototype.K) {
	GLOBAL.Element.extend.refresh = Prototype.emptyFunction;
} else {
	GLOBAL.Element.extend.refresh = function() {
	  if (Prototype.BrowserFeatures.ElementExtensions) return;
	  Object.extend(Methods, Element.Methods);
	  Object.extend(Methods, Element.Methods.Simulated);

	  EXTENDED = {};
	};
}

function addFormMethods() {
	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),
	  "BUTTON":   Object.clone(Form.Element.Methods)
	});
}

Element.addMethods(methods);

})(this);
(function() {

function toDecimal(pctString) {
	var match = pctString.match(/^(\d+)%?$/i);
	if (!match) return null;
	return (Number(match[1]) / 100);
}

function getRawStyle(element, style) {
	element = $(element);

	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;
}

function getRawStyle_IE(element, style) {
	var value = element.style[style];
	if (!value && element.currentStyle) {
	  value = element.currentStyle[style];
	}
	return value;
}

function getContentWidth(element, context) {
	var boxWidth = element.offsetWidth;

	var bl = getPixelValue(element, 'borderLeftWidth',  context) || 0;
	var br = getPixelValue(element, 'borderRightWidth', context) || 0;
	var pl = getPixelValue(element, 'paddingLeft',      context) || 0;
	var pr = getPixelValue(element, 'paddingRight',     context) || 0;

	return boxWidth - bl - br - pl - pr;
}

if ('currentStyle' in document.documentElement) {
	getRawStyle = getRawStyle_IE;
}


function getPixelValue(value, property, context) {
	var element = null;
	if (Object.isElement(value)) {
	  element = value;
	  value = getRawStyle(element, property);
	}

	if (value === null || Object.isUndefined(value)) {
	  return null;
	}

	if ((/^(?:-)?\d+(\.\d+)?(px)?$/i).test(value)) {
	  return window.parseFloat(value);
	}

	var isPercentage = value.include('%'), isViewport = (context === document.viewport);

	if (/\d/.test(value) && element && element.runtimeStyle && !(isPercentage && isViewport)) {
	  var style = element.style.left, rStyle = element.runtimeStyle.left;
	  element.runtimeStyle.left = element.currentStyle.left;
	  element.style.left = value || 0;
	  value = element.style.pixelLeft;
	  element.style.left = style;
	  element.runtimeStyle.left = rStyle;

	  return value;
	}

	if (element && isPercentage) {
	  context = context || element.parentNode;
	  var decimal = toDecimal(value), whole = null;

	  var isHorizontal = property.include('left') || property.include('right') ||
	   property.include('width');

	  var isVertical   = property.include('top') || property.include('bottom') ||
		property.include('height');

	  if (context === document.viewport) {
		if (isHorizontal) {
		  whole = document.viewport.getWidth();
		} else if (isVertical) {
		  whole = document.viewport.getHeight();
		}
	  } else {
		if (isHorizontal) {
		  whole = $(context).measure('width');
		} else if (isVertical) {
		  whole = $(context).measure('height');
		}
	  }

	  return (whole === null) ? 0 : whole * decimal;
	}

	return 0;
}

function toCSSPixels(number) {
	if (Object.isString(number) && number.endsWith('px'))
	  return number;
	return number + 'px';
}

function isDisplayed(element) {
	while (element && element.parentNode) {
	  var display = element.getStyle('display');
	  if (display === 'none') {
		return false;
	  }
	  element = $(element.parentNode);
	}
	return true;
}

var hasLayout = Prototype.K;
if ('currentStyle' in document.documentElement) {
	hasLayout = function(element) {
	  if (!element.currentStyle.hasLayout) {
		element.style.zoom = 1;
	  }
	  return element;
	};
}

function cssNameFor(key) {
	if (key.include('border')) key = key + '-width';
	return key.camelize();
}

Element.Layout = Class.create(Hash, {
	initialize: function($super, element, preCompute) {
	  $super();
	  this.element = $(element);

	  Element.Layout.PROPERTIES.each( function(property) {
		this._set(property, null);
	  }, this);

	  if (preCompute) {
		this._preComputing = true;
		this._begin();
		Element.Layout.PROPERTIES.each( this._compute, this );
		this._end();
		this._preComputing = false;
	  }
	},

	_set: function(property, value) {
	  return Hash.prototype.set.call(this, property, value);
	},

	set: function(property, value) {
	  throw "Properties of Element.Layout are read-only.";
	},

	get: function($super, property) {
	  var value = $super(property);
	  return value === null ? this._compute(property) : value;
	},

	_begin: function() {
	  if (this._isPrepared()) return;

	  var element = this.element;
	  if (isDisplayed(element)) {
		this._setPrepared(true);
		return;
	  }


	  var originalStyles = {
		position:   element.style.position   || '',
		width:      element.style.width      || '',
		visibility: element.style.visibility || '',
		display:    element.style.display    || ''
	  };

	  element.store('prototype_original_styles', originalStyles);

	  var position = getRawStyle(element, 'position'), width = element.offsetWidth;

	  if (width === 0 || width === null) {
		element.style.display = 'block';
		width = element.offsetWidth;
	  }

	  var context = (position === 'fixed') ? document.viewport :
	   element.parentNode;

	  var tempStyles = {
		visibility: 'hidden',
		display:    'block'
	  };

	  if (position !== 'fixed') tempStyles.position = 'absolute';

	  element.setStyle(tempStyles);

	  var positionedWidth = element.offsetWidth, newWidth;
	  if (width && (positionedWidth === width)) {
		newWidth = getContentWidth(element, context);
	  } else if (position === 'absolute' || position === 'fixed') {
		newWidth = getContentWidth(element, context);
	  } else {
		var parent = element.parentNode, pLayout = $(parent).getLayout();

		newWidth = pLayout.get('width') -
		 this.get('margin-left') -
		 this.get('border-left') -
		 this.get('padding-left') -
		 this.get('padding-right') -
		 this.get('border-right') -
		 this.get('margin-right');
	  }

	  element.setStyle({ width: newWidth + 'px' });

	  this._setPrepared(true);
	},

	_end: function() {
	  var element = this.element;
	  var originalStyles = element.retrieve('prototype_original_styles');
	  element.store('prototype_original_styles', null);
	  element.setStyle(originalStyles);
	  this._setPrepared(false);
	},

	_compute: function(property) {
	  var COMPUTATIONS = Element.Layout.COMPUTATIONS;
	  if (!(property in COMPUTATIONS)) {
		throw "Property not found.";
	  }

	  return this._set(property, COMPUTATIONS[property].call(this, this.element));
	},

	_isPrepared: function() {
	  return this.element.retrieve('prototype_element_layout_prepared', false);
	},

	_setPrepared: function(bool) {
	  return this.element.store('prototype_element_layout_prepared', bool);
	},

	toObject: function() {
	  var args = $A(arguments);
	  var keys = (args.length === 0) ? Element.Layout.PROPERTIES :
	   args.join(' ').split(' ');
	  var obj = {};
	  keys.each( function(key) {
		if (!Element.Layout.PROPERTIES.include(key)) return;
		var value = this.get(key);
		if (value != null) obj[key] = value;
	  }, this);
	  return obj;
	},

	toHash: function() {
	  var obj = this.toObject.apply(this, arguments);
	  return new Hash(obj);
	},

	toCSS: function() {
	  var args = $A(arguments);
	  var keys = (args.length === 0) ? Element.Layout.PROPERTIES :
	   args.join(' ').split(' ');
	  var css = {};

	  keys.each( function(key) {
		if (!Element.Layout.PROPERTIES.include(key)) return;
		if (Element.Layout.COMPOSITE_PROPERTIES.include(key)) return;

		var value = this.get(key);
		if (value != null) css[cssNameFor(key)] = value + 'px';
	  }, this);
	  return css;
	},

	inspect: function() {
	  return "#<Element.Layout>";
	}
});

Object.extend(Element.Layout, {
	PROPERTIES: $w('height width top left right bottom border-left border-right border-top border-bottom padding-left padding-right padding-top padding-bottom margin-top margin-bottom margin-left margin-right padding-box-width padding-box-height border-box-width border-box-height margin-box-width margin-box-height'),

	COMPOSITE_PROPERTIES: $w('padding-box-width padding-box-height margin-box-width margin-box-height border-box-width border-box-height'),

	COMPUTATIONS: {
	  'height': function(element) {
		if (!this._preComputing) this._begin();

		var bHeight = this.get('border-box-height');
		if (bHeight <= 0) {
		  if (!this._preComputing) this._end();
		  return 0;
		}

		var bTop = this.get('border-top'),
		 bBottom = this.get('border-bottom');

		var pTop = this.get('padding-top'),
		 pBottom = this.get('padding-bottom');

		if (!this._preComputing) this._end();

		return bHeight - bTop - bBottom - pTop - pBottom;
	  },

	  'width': function(element) {
		if (!this._preComputing) this._begin();

		var bWidth = this.get('border-box-width');
		if (bWidth <= 0) {
		  if (!this._preComputing) this._end();
		  return 0;
		}

		var bLeft = this.get('border-left'),
		 bRight = this.get('border-right');

		var pLeft = this.get('padding-left'),
		 pRight = this.get('padding-right');

		if (!this._preComputing) this._end();
		return bWidth - bLeft - bRight - pLeft - pRight;
	  },

	  'padding-box-height': function(element) {
		var height = this.get('height'),
		 pTop = this.get('padding-top'),
		 pBottom = this.get('padding-bottom');

		return height + pTop + pBottom;
	  },

	  'padding-box-width': function(element) {
		var width = this.get('width'),
		 pLeft = this.get('padding-left'),
		 pRight = this.get('padding-right');

		return width + pLeft + pRight;
	  },

	  'border-box-height': function(element) {
		if (!this._preComputing) this._begin();
		var height = element.offsetHeight;
		if (!this._preComputing) this._end();
		return height;
	  },

	  'border-box-width': function(element) {
		if (!this._preComputing) this._begin();
		var width = element.offsetWidth;
		if (!this._preComputing) this._end();
		return width;
	  },

	  'margin-box-height': function(element) {
		var bHeight = this.get('border-box-height'),
		 mTop = this.get('margin-top'),
		 mBottom = this.get('margin-bottom');

		if (bHeight <= 0) return 0;

		return bHeight + mTop + mBottom;
	  },

	  'margin-box-width': function(element) {
		var bWidth = this.get('border-box-width'),
		 mLeft = this.get('margin-left'),
		 mRight = this.get('margin-right');

		if (bWidth <= 0) return 0;

		return bWidth + mLeft + mRight;
	  },

	  'top': function(element) {
		var offset = element.positionedOffset();
		return offset.top;
	  },

	  'bottom': function(element) {
		var offset = element.positionedOffset(),
		 parent = element.getOffsetParent(),
		 pHeight = parent.measure('height');

		var mHeight = this.get('border-box-height');

		return pHeight - mHeight - offset.top;
	  },

	  'left': function(element) {
		var offset = element.positionedOffset();
		return offset.left;
	  },

	  'right': function(element) {
		var offset = element.positionedOffset(),
		 parent = element.getOffsetParent(),
		 pWidth = parent.measure('width');

		var mWidth = this.get('border-box-width');

		return pWidth - mWidth - offset.left;
	  },

	  'padding-top': function(element) {
		return getPixelValue(element, 'paddingTop');
	  },

	  'padding-bottom': function(element) {
		return getPixelValue(element, 'paddingBottom');
	  },

	  'padding-left': function(element) {
		return getPixelValue(element, 'paddingLeft');
	  },

	  'padding-right': function(element) {
		return getPixelValue(element, 'paddingRight');
	  },

	  'border-top': function(element) {
		return getPixelValue(element, 'borderTopWidth');
	  },

	  'border-bottom': function(element) {
		return getPixelValue(element, 'borderBottomWidth');
	  },

	  'border-left': function(element) {
		return getPixelValue(element, 'borderLeftWidth');
	  },

	  'border-right': function(element) {
		return getPixelValue(element, 'borderRightWidth');
	  },

	  'margin-top': function(element) {
		return getPixelValue(element, 'marginTop');
	  },

	  'margin-bottom': function(element) {
		return getPixelValue(element, 'marginBottom');
	  },

	  'margin-left': function(element) {
		return getPixelValue(element, 'marginLeft');
	  },

	  'margin-right': function(element) {
		return getPixelValue(element, 'marginRight');
	  }
	}
});

if ('getBoundingClientRect' in document.documentElement) {
	Object.extend(Element.Layout.COMPUTATIONS, {
	  'right': function(element) {
		var parent = hasLayout(element.getOffsetParent());
		var rect = element.getBoundingClientRect(),
		 pRect = parent.getBoundingClientRect();

		return (pRect.right - rect.right).round();
	  },

	  'bottom': function(element) {
		var parent = hasLayout(element.getOffsetParent());
		var rect = element.getBoundingClientRect(),
		 pRect = parent.getBoundingClientRect();

		return (pRect.bottom - rect.bottom).round();
	  }
	});
}

Element.Offset = Class.create({
	initialize: function(left, top) {
	  this.left = left.round();
	  this.top  = top.round();

	  this[0] = this.left;
	  this[1] = this.top;
	},

	relativeTo: function(offset) {
	  return new Element.Offset(
		this.left - offset.left,
		this.top  - offset.top
	  );
	},

	inspect: function() {
	  return "#<Element.Offset left: #{left} top: #{top}>".interpolate(this);
	},

	toString: function() {
	  return "[#{left}, #{top}]".interpolate(this);
	},

	toArray: function() {
	  return [this.left, this.top];
	}
});

function getLayout(element, preCompute) {
	return new Element.Layout(element, preCompute);
}

function measure(element, property) {
	return $(element).getLayout().get(property);
}

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

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

function getDimensions(element) {
	element = $(element);
	var display = Element.getStyle(element, 'display');

	if (display && display !== 'none') {
	  return { width: element.offsetWidth, height: element.offsetHeight };
	}

	var style = element.style;
	var originalStyles = {
	  visibility: style.visibility,
	  position:   style.position,
	  display:    style.display
	};

	var newStyles = {
	  visibility: 'hidden',
	  display:    'block'
	};

	if (originalStyles.position !== 'fixed')
	  newStyles.position = 'absolute';

	Element.setStyle(element, newStyles);

	var dimensions = {
	  width:  element.offsetWidth,
	  height: element.offsetHeight
	};

	Element.setStyle(element, originalStyles);

	return dimensions;
}

function getOffsetParent(element) {
	element = $(element);

	if (isDocument(element) || isDetached(element) || isBody(element) || isHtml(element))
	  return $(document.body);

	var isInline = (Element.getStyle(element, 'display') === 'inline');
	if (!isInline && element.offsetParent) return $(element.offsetParent);

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

	return $(document.body);
}


function cumulativeOffset(element) {
	element = $(element);
	var valueT = 0, valueL = 0;
	if (element.parentNode) {
	  do {
		valueT += element.offsetTop  || 0;
		valueL += element.offsetLeft || 0;
		element = element.offsetParent;
	  } while (element);
	}
	return new Element.Offset(valueL, valueT);
}

function positionedOffset(element) {
	element = $(element);

	var layout = element.getLayout();

	var valueT = 0, valueL = 0;
	do {
	  valueT += element.offsetTop  || 0;
	  valueL += element.offsetLeft || 0;
	  element = element.offsetParent;
	  if (element) {
		if (isBody(element)) break;
		var p = Element.getStyle(element, 'position');
		if (p !== 'static') break;
	  }
	} while (element);

	valueL -= layout.get('margin-top');
	valueT -= layout.get('margin-left');

	return new Element.Offset(valueL, valueT);
}

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

function viewportOffset(forElement) {
	var valueT = 0, valueL = 0, docBody = document.body;

	var element = $(forElement);
	do {
	  valueT += element.offsetTop  || 0;
	  valueL += element.offsetLeft || 0;
	  if (element.offsetParent == docBody &&
		Element.getStyle(element, 'position') == 'absolute') break;
	} while (element = element.offsetParent);

	element = forElement;
	do {
	  if (element != docBody) {
		valueT -= element.scrollTop  || 0;
		valueL -= element.scrollLeft || 0;
	  }
	} while (element = element.parentNode);
	return new Element.Offset(valueL, valueT);
}

function absolutize(element) {
	element = $(element);

	if (Element.getStyle(element, 'position') === 'absolute') {
	  return element;
	}

	var offsetParent = getOffsetParent(element);
	var eOffset = element.viewportOffset(),
	 pOffset = offsetParent.viewportOffset();

	var offset = eOffset.relativeTo(pOffset);
	var layout = element.getLayout();

	element.store('prototype_absolutize_original_styles', {
	  left:   element.getStyle('left'),
	  top:    element.getStyle('top'),
	  width:  element.getStyle('width'),
	  height: element.getStyle('height')
	});

	element.setStyle({
	  position: 'absolute',
	  top:    offset.top + 'px',
	  left:   offset.left + 'px',
	  width:  layout.get('width') + 'px',
	  height: layout.get('height') + 'px'
	});

	return element;
}

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

	var originalStyles =
	 element.retrieve('prototype_absolutize_original_styles');

	if (originalStyles) element.setStyle(originalStyles);
	return element;
}


function scrollTo(element) {
	element = $(element);
	var pos = Element.cumulativeOffset(element);
	window.scrollTo(pos.left, pos.top);
	return element;
}


function makePositioned(element) {
	element = $(element);
	var position = Element.getStyle(element, 'position'), styles = {};
	if (position === 'static' || !position) {
	  styles.position = 'relative';
	  if (Prototype.Browser.Opera) {
		styles.top  = 0;
		styles.left = 0;
	  }
	  Element.setStyle(element, styles);
	  Element.store(element, 'prototype_made_positioned', true);
	}
	return element;
}

function undoPositioned(element) {
	element = $(element);
	var storage = Element.getStorage(element),
	 madePositioned = storage.get('prototype_made_positioned');

	if (madePositioned) {
	  storage.unset('prototype_made_positioned');
	  Element.setStyle(element, {
		position: '',
		top:      '',
		bottom:   '',
		left:     '',
		right:    ''
	  });
	}
	return element;
}

function makeClipping(element) {
	element = $(element);

	var storage = Element.getStorage(element),
	 madeClipping = storage.get('prototype_made_clipping');

	if (Object.isUndefined(madeClipping)) {
	  var overflow = Element.getStyle(element, 'overflow');
	  storage.set('prototype_made_clipping', overflow);
	  if (overflow !== 'hidden')
		element.style.overflow = 'hidden';
	}

	return element;
}

function undoClipping(element) {
	element = $(element);
	var storage = Element.getStorage(element),
	 overflow = storage.get('prototype_made_clipping');

	if (!Object.isUndefined(overflow)) {
	  storage.unset('prototype_made_clipping');
	  element.style.overflow = overflow || '';
	}

	return element;
}

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

	source  = $(source);
	element = $(element);
	var p, delta, layout, styles = {};

	if (options.setLeft || options.setTop) {
	  p = Element.viewportOffset(source);
	  delta = [0, 0];
	  if (Element.getStyle(element, 'position') === 'absolute') {
		var parent = Element.getOffsetParent(element);
		if (parent !== document.body) delta = Element.viewportOffset(parent);
	  }
	}

	if (options.setWidth || options.setHeight) {
	  layout = Element.getLayout(source);
	}

	if (options.setLeft)
	  styles.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
	if (options.setTop)
	  styles.top  = (p[1] - delta[1] + options.offsetTop)  + 'px';

	if (options.setWidth)
	  styles.width  = layout.get('border-box-width')  + 'px';
	if (options.setHeight)
	  styles.height = layout.get('border-box-height') + 'px';

	return Element.setStyle(element, styles);
}


if (Prototype.Browser.IE) {
	getOffsetParent = getOffsetParent.wrap(
	  function(proceed, element) {
		element = $(element);

		if (isDocument(element) || isDetached(element) || isBody(element) || isHtml(element))
		  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;
	  }
	);

	positionedOffset = positionedOffset.wrap(function(proceed, element) {
	  element = $(element);
	  if (!element.parentNode) return new Element.Offset(0, 0);
	  var position = element.getStyle('position');
	  if (position !== 'static') return proceed(element);

	  var offsetParent = element.getOffsetParent();
	  if (offsetParent && offsetParent.getStyle('position') === 'fixed')
		hasLayout(offsetParent);

	  element.setStyle({ position: 'relative' });
	  var value = proceed(element);
	  element.setStyle({ position: position });
	  return value;
	});
} else if (Prototype.Browser.Webkit) {
	cumulativeOffset = function(element) {
	  element = $(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 new Element.Offset(valueL, valueT);
	};
}


Element.addMethods({
	getLayout:              getLayout,
	measure:                measure,
	getWidth:               getWidth,
	getHeight:              getHeight,
	getDimensions:          getDimensions,
	getOffsetParent:        getOffsetParent,
	cumulativeOffset:       cumulativeOffset,
	positionedOffset:       positionedOffset,
	cumulativeScrollOffset: cumulativeScrollOffset,
	viewportOffset:         viewportOffset,
	absolutize:             absolutize,
	relativize:             relativize,
	scrollTo:               scrollTo,
	makePositioned:         makePositioned,
	undoPositioned:         undoPositioned,
	makeClipping:           makeClipping,
	undoClipping:           undoClipping,
	clonePosition:          clonePosition
});

function isBody(element) {
	return element.nodeName.toUpperCase() === 'BODY';
}

function isHtml(element) {
	return element.nodeName.toUpperCase() === 'HTML';
}

function isDocument(element) {
	return element.nodeType === Node.DOCUMENT_NODE;
}

function isDetached(element) {
	return element !== document.body &&
	 !Element.descendantOf(element, document.body);
}

if ('getBoundingClientRect' in document.documentElement) {
	Element.addMethods({
	  viewportOffset: function(element) {
		element = $(element);
		if (isDetached(element)) return new Element.Offset(0, 0);

		var rect = element.getBoundingClientRect(),
		 docEl = document.documentElement;
		return new Element.Offset(rect.left - docEl.clientLeft,
		 rect.top - docEl.clientTop);
	  }
	});
}


})();

(function() {

var IS_OLD_OPERA = Prototype.Browser.Opera &&
(window.parseFloat(window.opera.version()) < 9.5);
var ROOT = null;
function getRootElement() {
	if (ROOT) return ROOT;
	ROOT = IS_OLD_OPERA ? document.body : document.documentElement;
	return ROOT;
}

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

function getWidth() {
	return getRootElement().clientWidth;
}

function getHeight() {
	return getRootElement().clientHeight;
}

function getScrollOffsets() {
	var x = window.pageXOffset || document.documentElement.scrollLeft ||
	 document.body.scrollLeft;
	var y = window.pageYOffset || document.documentElement.scrollTop ||
	 document.body.scrollTop;

	return new Element.Offset(x, y);
}

document.viewport = {
	getDimensions:    getDimensions,
	getWidth:         getWidth,
	getHeight:        getHeight,
	getScrollOffsets: getScrollOffsets
};

})();
window.$$ = function() {
var expression = $A(arguments).join(', ');
return Prototype.Selector.select(expression, document);
};

Prototype.Selector = (function() {

function select() {
	throw new Error('Method "Prototype.Selector.select" must be defined.');
}

function match() {
	throw new Error('Method "Prototype.Selector.match" must be defined.');
}

function find(elements, expression, index) {
	index = index || 0;
	var match = Prototype.Selector.match, length = elements.length, matchIndex = 0, i;

	for (i = 0; i < length; i++) {
	  if (match(elements[i], expression) && index == matchIndex++) {
		return Element.extend(elements[i]);
	  }
	}
}

function extendElements(elements) {
	for (var i = 0, length = elements.length; i < length; i++) {
	  Element.extend(elements[i]);
	}
	return elements;
}


var K = Prototype.K;

return {
	select: select,
	match: match,
	find: find,
	extendElements: (Element.extend === K) ? K : extendElements,
	extendElement: Element.extend
};
})();
/*!
 * Sizzle CSS Selector Engine
 *  Copyright 2011, The Dojo Foundation
 *  Released under the MIT, BSD, and GPL Licenses.
 *  More information: http://sizzlejs.com/
 */
(function(){

var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^\[\]]*\]|['"][^'"]*['"]|[^\[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g,
	done = 0,
	toString = Object.prototype.toString,
	hasDuplicate = false,
	baseHasDuplicate = true,
	rBackslash = /\\/g,
	rNonWord = /\W/;

[0, 0].sort(function() {
	baseHasDuplicate = false;
	return 0;
});

var Sizzle = function( selector, context, results, seed ) {
	results = results || [];
	context = context || document;

	var origContext = context;

	if ( context.nodeType !== 1 && context.nodeType !== 9 ) {
		return [];
	}

	if ( !selector || typeof selector !== "string" ) {
		return results;
	}

	var m, set, checkSet, extra, ret, cur, pop, i,
		prune = true,
		contextXML = Sizzle.isXML( context ),
		parts = [],
		soFar = selector;

	do {
		chunker.exec( "" );
		m = chunker.exec( soFar );

		if ( m ) {
			soFar = m[3];

			parts.push( m[1] );

			if ( m[2] ) {
				extra = m[3];
				break;
			}
		}
	} while ( m );

	if ( parts.length > 1 && origPOS.exec( selector ) ) {

		if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
			set = posProcess( parts[0] + parts[1], context );

		} else {
			set = Expr.relative[ parts[0] ] ?
				[ context ] :
				Sizzle( parts.shift(), context );

			while ( parts.length ) {
				selector = parts.shift();

				if ( Expr.relative[ selector ] ) {
					selector += parts.shift();
				}

				set = posProcess( selector, set );
			}
		}

	} else {
		if ( !seed && parts.length > 1 && context.nodeType === 9 && !contextXML &&
				Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1]) ) {

			ret = Sizzle.find( parts.shift(), context, contextXML );
			context = ret.expr ?
				Sizzle.filter( ret.expr, ret.set )[0] :
				ret.set[0];
		}

		if ( context ) {
			ret = seed ?
				{ expr: parts.pop(), set: makeArray(seed) } :
				Sizzle.find( parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML );

			set = ret.expr ?
				Sizzle.filter( ret.expr, ret.set ) :
				ret.set;

			if ( parts.length > 0 ) {
				checkSet = makeArray( set );

			} else {
				prune = false;
			}

			while ( parts.length ) {
				cur = parts.pop();
				pop = cur;

				if ( !Expr.relative[ cur ] ) {
					cur = "";
				} else {
					pop = parts.pop();
				}

				if ( pop == null ) {
					pop = context;
				}

				Expr.relative[ cur ]( checkSet, pop, contextXML );
			}

		} else {
			checkSet = parts = [];
		}
	}

	if ( !checkSet ) {
		checkSet = set;
	}

	if ( !checkSet ) {
		Sizzle.error( cur || selector );
	}

	if ( toString.call(checkSet) === "[object Array]" ) {
		if ( !prune ) {
			results.push.apply( results, checkSet );

		} else if ( context && context.nodeType === 1 ) {
			for ( i = 0; checkSet[i] != null; i++ ) {
				if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && Sizzle.contains(context, checkSet[i])) ) {
					results.push( set[i] );
				}
			}

		} else {
			for ( i = 0; checkSet[i] != null; i++ ) {
				if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
					results.push( set[i] );
				}
			}
		}

	} else {
		makeArray( checkSet, results );
	}

	if ( extra ) {
		Sizzle( extra, origContext, results, seed );
		Sizzle.uniqueSort( results );
	}

	return results;
};

Sizzle.uniqueSort = function( results ) {
	if ( sortOrder ) {
		hasDuplicate = baseHasDuplicate;
		results.sort( sortOrder );

		if ( hasDuplicate ) {
			for ( var i = 1; i < results.length; i++ ) {
				if ( results[i] === results[ i - 1 ] ) {
					results.splice( i--, 1 );
				}
			}
		}
	}

	return results;
};

Sizzle.matches = function( expr, set ) {
	return Sizzle( expr, null, null, set );
};

Sizzle.matchesSelector = function( node, expr ) {
	return Sizzle( expr, null, null, [node] ).length > 0;
};

Sizzle.find = function( expr, context, isXML ) {
	var set;

	if ( !expr ) {
		return [];
	}

	for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
		var match,
			type = Expr.order[i];

		if ( (match = Expr.leftMatch[ type ].exec( expr )) ) {
			var left = match[1];
			match.splice( 1, 1 );

			if ( left.substr( left.length - 1 ) !== "\\" ) {
				match[1] = (match[1] || "").replace( rBackslash, "" );
				set = Expr.find[ type ]( match, context, isXML );

				if ( set != null ) {
					expr = expr.replace( Expr.match[ type ], "" );
					break;
				}
			}
		}
	}

	if ( !set ) {
		set = typeof context.getElementsByTagName !== "undefined" ?
			context.getElementsByTagName( "*" ) :
			[];
	}

	return { set: set, expr: expr };
};

Sizzle.filter = function( expr, set, inplace, not ) {
	var match, anyFound,
		old = expr,
		result = [],
		curLoop = set,
		isXMLFilter = set && set[0] && Sizzle.isXML( set[0] );

	while ( expr && set.length ) {
		for ( var type in Expr.filter ) {
			if ( (match = Expr.leftMatch[ type ].exec( expr )) != null && match[2] ) {
				var found, item,
					filter = Expr.filter[ type ],
					left = match[1];

				anyFound = false;

				match.splice(1,1);

				if ( left.substr( left.length - 1 ) === "\\" ) {
					continue;
				}

				if ( curLoop === result ) {
					result = [];
				}

				if ( Expr.preFilter[ type ] ) {
					match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not, isXMLFilter );

					if ( !match ) {
						anyFound = found = true;

					} else if ( match === true ) {
						continue;
					}
				}

				if ( match ) {
					for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
						if ( item ) {
							found = filter( item, match, i, curLoop );
							var pass = not ^ !!found;

							if ( inplace && found != null ) {
								if ( pass ) {
									anyFound = true;

								} else {
									curLoop[i] = false;
								}

							} else if ( pass ) {
								result.push( item );
								anyFound = true;
							}
						}
					}
				}

				if ( found !== undefined ) {
					if ( !inplace ) {
						curLoop = result;
					}

					expr = expr.replace( Expr.match[ type ], "" );

					if ( !anyFound ) {
						return [];
					}

					break;
				}
			}
		}

		if ( expr === old ) {
			if ( anyFound == null ) {
				Sizzle.error( expr );

			} else {
				break;
			}
		}

		old = expr;
	}

	return curLoop;
};

Sizzle.error = function( msg ) {
	throw "Syntax error, unrecognized expression: " + msg;
};

var Expr = Sizzle.selectors = {
	order: [ "ID", "NAME", "TAG" ],

	match: {
		ID: /#((?:[\w\u00c0-\uFFFF\-]|\\.)+)/,
		CLASS: /\.((?:[\w\u00c0-\uFFFF\-]|\\.)+)/,
		NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF\-]|\\.)+)['"]*\]/,
		ATTR: /\[\s*((?:[\w\u00c0-\uFFFF\-]|\\.)+)\s*(?:(\S?=)\s*(?:(['"])(.*?)\3|(#?(?:[\w\u00c0-\uFFFF\-]|\\.)*)|)|)\s*\]/,
		TAG: /^((?:[\w\u00c0-\uFFFF\*\-]|\\.)+)/,
		CHILD: /:(only|nth|last|first)-child(?:\(\s*(even|odd|(?:[+\-]?\d+|(?:[+\-]?\d*)?n\s*(?:[+\-]\s*\d+)?))\s*\))?/,
		POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^\-]|$)/,
		PSEUDO: /:((?:[\w\u00c0-\uFFFF\-]|\\.)+)(?:\((['"]?)((?:\([^\)]+\)|[^\(\)]*)+)\2\))?/
	},

	leftMatch: {},

	attrMap: {
		"class": "className",
		"for": "htmlFor"
	},

	attrHandle: {
		href: function( elem ) {
			return elem.getAttribute( "href" );
		},
		type: function( elem ) {
			return elem.getAttribute( "type" );
		}
	},

	relative: {
		"+": function(checkSet, part){
			var isPartStr = typeof part === "string",
				isTag = isPartStr && !rNonWord.test( part ),
				isPartStrNotTag = isPartStr && !isTag;

			if ( isTag ) {
				part = part.toLowerCase();
			}

			for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
				if ( (elem = checkSet[i]) ) {
					while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {}

					checkSet[i] = isPartStrNotTag || elem && elem.nodeName.toLowerCase() === part ?
						elem || false :
						elem === part;
				}
			}

			if ( isPartStrNotTag ) {
				Sizzle.filter( part, checkSet, true );
			}
		},

		">": function( checkSet, part ) {
			var elem,
				isPartStr = typeof part === "string",
				i = 0,
				l = checkSet.length;

			if ( isPartStr && !rNonWord.test( part ) ) {
				part = part.toLowerCase();

				for ( ; i < l; i++ ) {
					elem = checkSet[i];

					if ( elem ) {
						var parent = elem.parentNode;
						checkSet[i] = parent.nodeName.toLowerCase() === part ? parent : false;
					}
				}

			} else {
				for ( ; i < l; i++ ) {
					elem = checkSet[i];

					if ( elem ) {
						checkSet[i] = isPartStr ?
							elem.parentNode :
							elem.parentNode === part;
					}
				}

				if ( isPartStr ) {
					Sizzle.filter( part, checkSet, true );
				}
			}
		},

		"": function(checkSet, part, isXML){
			var nodeCheck,
				doneName = done++,
				checkFn = dirCheck;

			if ( typeof part === "string" && !rNonWord.test( part ) ) {
				part = part.toLowerCase();
				nodeCheck = part;
				checkFn = dirNodeCheck;
			}

			checkFn( "parentNode", part, doneName, checkSet, nodeCheck, isXML );
		},

		"~": function( checkSet, part, isXML ) {
			var nodeCheck,
				doneName = done++,
				checkFn = dirCheck;

			if ( typeof part === "string" && !rNonWord.test( part ) ) {
				part = part.toLowerCase();
				nodeCheck = part;
				checkFn = dirNodeCheck;
			}

			checkFn( "previousSibling", part, doneName, checkSet, nodeCheck, isXML );
		}
	},

	find: {
		ID: function( match, context, isXML ) {
			if ( typeof context.getElementById !== "undefined" && !isXML ) {
				var m = context.getElementById(match[1]);
				return m && m.parentNode ? [m] : [];
			}
		},

		NAME: function( match, context ) {
			if ( typeof context.getElementsByName !== "undefined" ) {
				var ret = [],
					results = context.getElementsByName( match[1] );

				for ( var i = 0, l = results.length; i < l; i++ ) {
					if ( results[i].getAttribute("name") === match[1] ) {
						ret.push( results[i] );
					}
				}

				return ret.length === 0 ? null : ret;
			}
		},

		TAG: function( match, context ) {
			if ( typeof context.getElementsByTagName !== "undefined" ) {
				return context.getElementsByTagName( match[1] );
			}
		}
	},
	preFilter: {
		CLASS: function( match, curLoop, inplace, result, not, isXML ) {
			match = " " + match[1].replace( rBackslash, "" ) + " ";

			if ( isXML ) {
				return match;
			}

			for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
				if ( elem ) {
					if ( not ^ (elem.className && (" " + elem.className + " ").replace(/[\t\n\r]/g, " ").indexOf(match) >= 0) ) {
						if ( !inplace ) {
							result.push( elem );
						}

					} else if ( inplace ) {
						curLoop[i] = false;
					}
				}
			}

			return false;
		},

		ID: function( match ) {
			return match[1].replace( rBackslash, "" );
		},

		TAG: function( match, curLoop ) {
			return match[1].replace( rBackslash, "" ).toLowerCase();
		},

		CHILD: function( match ) {
			if ( match[1] === "nth" ) {
				if ( !match[2] ) {
					Sizzle.error( match[0] );
				}

				match[2] = match[2].replace(/^\+|\s*/g, '');

				var test = /(-?)(\d*)(?:n([+\-]?\d*))?/.exec(
					match[2] === "even" && "2n" || match[2] === "odd" && "2n+1" ||
					!/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);

				match[2] = (test[1] + (test[2] || 1)) - 0;
				match[3] = test[3] - 0;
			}
			else if ( match[2] ) {
				Sizzle.error( match[0] );
			}

			match[0] = done++;

			return match;
		},

		ATTR: function( match, curLoop, inplace, result, not, isXML ) {
			var name = match[1] = match[1].replace( rBackslash, "" );

			if ( !isXML && Expr.attrMap[name] ) {
				match[1] = Expr.attrMap[name];
			}

			match[4] = ( match[4] || match[5] || "" ).replace( rBackslash, "" );

			if ( match[2] === "~=" ) {
				match[4] = " " + match[4] + " ";
			}

			return match;
		},

		PSEUDO: function( match, curLoop, inplace, result, not ) {
			if ( match[1] === "not" ) {
				if ( ( chunker.exec(match[3]) || "" ).length > 1 || /^\w/.test(match[3]) ) {
					match[3] = Sizzle(match[3], null, null, curLoop);

				} else {
					var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);

					if ( !inplace ) {
						result.push.apply( result, ret );
					}

					return false;
				}

			} else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) {
				return true;
			}

			return match;
		},

		POS: function( match ) {
			match.unshift( true );

			return match;
		}
	},

	filters: {
		enabled: function( elem ) {
			return elem.disabled === false && elem.type !== "hidden";
		},

		disabled: function( elem ) {
			return elem.disabled === true;
		},

		checked: function( elem ) {
			return elem.checked === true;
		},

		selected: function( elem ) {
			if ( elem.parentNode ) {
				elem.parentNode.selectedIndex;
			}

			return elem.selected === true;
		},

		parent: function( elem ) {
			return !!elem.firstChild;
		},

		empty: function( elem ) {
			return !elem.firstChild;
		},

		has: function( elem, i, match ) {
			return !!Sizzle( match[3], elem ).length;
		},

		header: function( elem ) {
			return (/h\d/i).test( elem.nodeName );
		},

		text: function( elem ) {
			var attr = elem.getAttribute( "type" ), type = elem.type;
			return elem.nodeName.toLowerCase() === "input" && "text" === type && ( attr === type || attr === null );
		},

		radio: function( elem ) {
			return elem.nodeName.toLowerCase() === "input" && "radio" === elem.type;
		},

		checkbox: function( elem ) {
			return elem.nodeName.toLowerCase() === "input" && "checkbox" === elem.type;
		},

		file: function( elem ) {
			return elem.nodeName.toLowerCase() === "input" && "file" === elem.type;
		},

		password: function( elem ) {
			return elem.nodeName.toLowerCase() === "input" && "password" === elem.type;
		},

		submit: function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return (name === "input" || name === "button") && "submit" === elem.type;
		},

		image: function( elem ) {
			return elem.nodeName.toLowerCase() === "input" && "image" === elem.type;
		},

		reset: function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return (name === "input" || name === "button") && "reset" === elem.type;
		},

		button: function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return name === "input" && "button" === elem.type || name === "button";
		},

		input: function( elem ) {
			return (/input|select|textarea|button/i).test( elem.nodeName );
		},

		focus: function( elem ) {
			return elem === elem.ownerDocument.activeElement;
		}
	},
	setFilters: {
		first: function( elem, i ) {
			return i === 0;
		},

		last: function( elem, i, match, array ) {
			return i === array.length - 1;
		},

		even: function( elem, i ) {
			return i % 2 === 0;
		},

		odd: function( elem, i ) {
			return i % 2 === 1;
		},

		lt: function( elem, i, match ) {
			return i < match[3] - 0;
		},

		gt: function( elem, i, match ) {
			return i > match[3] - 0;
		},

		nth: function( elem, i, match ) {
			return match[3] - 0 === i;
		},

		eq: function( elem, i, match ) {
			return match[3] - 0 === i;
		}
	},
	filter: {
		PSEUDO: function( elem, match, i, array ) {
			var name = match[1],
				filter = Expr.filters[ name ];

			if ( filter ) {
				return filter( elem, i, match, array );

			} else if ( name === "contains" ) {
				return (elem.textContent || elem.innerText || Sizzle.getText([ elem ]) || "").indexOf(match[3]) >= 0;

			} else if ( name === "not" ) {
				var not = match[3];

				for ( var j = 0, l = not.length; j < l; j++ ) {
					if ( not[j] === elem ) {
						return false;
					}
				}

				return true;

			} else {
				Sizzle.error( name );
			}
		},

		CHILD: function( elem, match ) {
			var type = match[1],
				node = elem;

			switch ( type ) {
				case "only":
				case "first":
					while ( (node = node.previousSibling) )	 {
						if ( node.nodeType === 1 ) {
							return false;
						}
					}

					if ( type === "first" ) {
						return true;
					}

					node = elem;

				case "last":
					while ( (node = node.nextSibling) )	 {
						if ( node.nodeType === 1 ) {
							return false;
						}
					}

					return true;

				case "nth":
					var first = match[2],
						last = match[3];

					if ( first === 1 && last === 0 ) {
						return true;
					}

					var doneName = match[0],
						parent = elem.parentNode;

					if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
						var count = 0;

						for ( node = parent.firstChild; node; node = node.nextSibling ) {
							if ( node.nodeType === 1 ) {
								node.nodeIndex = ++count;
							}
						}

						parent.sizcache = doneName;
					}

					var diff = elem.nodeIndex - last;

					if ( first === 0 ) {
						return diff === 0;

					} else {
						return ( diff % first === 0 && diff / first >= 0 );
					}
			}
		},

		ID: function( elem, match ) {
			return elem.nodeType === 1 && elem.getAttribute("id") === match;
		},

		TAG: function( elem, match ) {
			return (match === "*" && elem.nodeType === 1) || elem.nodeName.toLowerCase() === match;
		},

		CLASS: function( elem, match ) {
			return (" " + (elem.className || elem.getAttribute("class")) + " ")
				.indexOf( match ) > -1;
		},

		ATTR: function( elem, match ) {
			var name = match[1],
				result = Expr.attrHandle[ name ] ?
					Expr.attrHandle[ name ]( elem ) :
					elem[ name ] != null ?
						elem[ name ] :
						elem.getAttribute( name ),
				value = result + "",
				type = match[2],
				check = match[4];

			return result == null ?
				type === "!=" :
				type === "=" ?
				value === check :
				type === "*=" ?
				value.indexOf(check) >= 0 :
				type === "~=" ?
				(" " + value + " ").indexOf(check) >= 0 :
				!check ?
				value && result !== false :
				type === "!=" ?
				value !== check :
				type === "^=" ?
				value.indexOf(check) === 0 :
				type === "$=" ?
				value.substr(value.length - check.length) === check :
				type === "|=" ?
				value === check || value.substr(0, check.length + 1) === check + "-" :
				false;
		},

		POS: function( elem, match, i, array ) {
			var name = match[2],
				filter = Expr.setFilters[ name ];

			if ( filter ) {
				return filter( elem, i, match, array );
			}
		}
	}
};

var origPOS = Expr.match.POS,
	fescape = function(all, num){
		return "\\" + (num - 0 + 1);
	};

for ( var type in Expr.match ) {
	Expr.match[ type ] = new RegExp( Expr.match[ type ].source + (/(?![^\[]*\])(?![^\(]*\))/.source) );
	Expr.leftMatch[ type ] = new RegExp( /(^(?:.|\r|\n)*?)/.source + Expr.match[ type ].source.replace(/\\(\d+)/g, fescape) );
}

var makeArray = function( array, results ) {
	array = Array.prototype.slice.call( array, 0 );

	if ( results ) {
		results.push.apply( results, array );
		return results;
	}

	return array;
};

try {
	Array.prototype.slice.call( document.documentElement.childNodes, 0 )[0].nodeType;

} catch( e ) {
	makeArray = function( array, results ) {
		var i = 0,
			ret = results || [];

		if ( toString.call(array) === "[object Array]" ) {
			Array.prototype.push.apply( ret, array );

		} else {
			if ( typeof array.length === "number" ) {
				for ( var l = array.length; i < l; i++ ) {
					ret.push( array[i] );
				}

			} else {
				for ( ; array[i]; i++ ) {
					ret.push( array[i] );
				}
			}
		}

		return ret;
	};
}

var sortOrder, siblingCheck;

if ( document.documentElement.compareDocumentPosition ) {
	sortOrder = function( a, b ) {
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		if ( !a.compareDocumentPosition || !b.compareDocumentPosition ) {
			return a.compareDocumentPosition ? -1 : 1;
		}

		return a.compareDocumentPosition(b) & 4 ? -1 : 1;
	};

} else {
	sortOrder = function( a, b ) {
		if ( a === b ) {
			hasDuplicate = true;
			return 0;

		} else if ( a.sourceIndex && b.sourceIndex ) {
			return a.sourceIndex - b.sourceIndex;
		}

		var al, bl,
			ap = [],
			bp = [],
			aup = a.parentNode,
			bup = b.parentNode,
			cur = aup;

		if ( aup === bup ) {
			return siblingCheck( a, b );

		} else if ( !aup ) {
			return -1;

		} else if ( !bup ) {
			return 1;
		}

		while ( cur ) {
			ap.unshift( cur );
			cur = cur.parentNode;
		}

		cur = bup;

		while ( cur ) {
			bp.unshift( cur );
			cur = cur.parentNode;
		}

		al = ap.length;
		bl = bp.length;

		for ( var i = 0; i < al && i < bl; i++ ) {
			if ( ap[i] !== bp[i] ) {
				return siblingCheck( ap[i], bp[i] );
			}
		}

		return i === al ?
			siblingCheck( a, bp[i], -1 ) :
			siblingCheck( ap[i], b, 1 );
	};

	siblingCheck = function( a, b, ret ) {
		if ( a === b ) {
			return ret;
		}

		var cur = a.nextSibling;

		while ( cur ) {
			if ( cur === b ) {
				return -1;
			}

			cur = cur.nextSibling;
		}

		return 1;
	};
}

Sizzle.getText = function( elems ) {
	var ret = "", elem;

	for ( var i = 0; elems[i]; i++ ) {
		elem = elems[i];

		if ( elem.nodeType === 3 || elem.nodeType === 4 ) {
			ret += elem.nodeValue;

		} else if ( elem.nodeType !== 8 ) {
			ret += Sizzle.getText( elem.childNodes );
		}
	}

	return ret;
};

(function(){
	var form = document.createElement("div"),
		id = "script" + (new Date()).getTime(),
		root = document.documentElement;

	form.innerHTML = "<a name='" + id + "'/>";

	root.insertBefore( form, root.firstChild );

	if ( document.getElementById( id ) ) {
		Expr.find.ID = function( match, context, isXML ) {
			if ( typeof context.getElementById !== "undefined" && !isXML ) {
				var m = context.getElementById(match[1]);

				return m ?
					m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ?
						[m] :
						undefined :
					[];
			}
		};

		Expr.filter.ID = function( elem, match ) {
			var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");

			return elem.nodeType === 1 && node && node.nodeValue === match;
		};
	}

	root.removeChild( form );

	root = form = null;
})();

(function(){

	var div = document.createElement("div");
	div.appendChild( document.createComment("") );

	if ( div.getElementsByTagName("*").length > 0 ) {
		Expr.find.TAG = function( match, context ) {
			var results = context.getElementsByTagName( match[1] );

			if ( match[1] === "*" ) {
				var tmp = [];

				for ( var i = 0; results[i]; i++ ) {
					if ( results[i].nodeType === 1 ) {
						tmp.push( results[i] );
					}
				}

				results = tmp;
			}

			return results;
		};
	}

	div.innerHTML = "<a href='#'></a>";

	if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
			div.firstChild.getAttribute("href") !== "#" ) {

		Expr.attrHandle.href = function( elem ) {
			return elem.getAttribute( "href", 2 );
		};
	}

	div = null;
})();

if ( document.querySelectorAll ) {
	(function(){
		var oldSizzle = Sizzle,
			div = document.createElement("div"),
			id = "__sizzle__";

		div.innerHTML = "<p class='TEST'></p>";

		if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
			return;
		}

		Sizzle = function( query, context, extra, seed ) {
			context = context || document;

			if ( !seed && !Sizzle.isXML(context) ) {
				var match = /^(\w+$)|^\.([\w\-]+$)|^#([\w\-]+$)/.exec( query );

				if ( match && (context.nodeType === 1 || context.nodeType === 9) ) {
					if ( match[1] ) {
						return makeArray( context.getElementsByTagName( query ), extra );

					} else if ( match[2] && Expr.find.CLASS && context.getElementsByClassName ) {
						return makeArray( context.getElementsByClassName( match[2] ), extra );
					}
				}

				if ( context.nodeType === 9 ) {
					if ( query === "body" && context.body ) {
						return makeArray( [ context.body ], extra );

					} else if ( match && match[3] ) {
						var elem = context.getElementById( match[3] );

						if ( elem && elem.parentNode ) {
							if ( elem.id === match[3] ) {
								return makeArray( [ elem ], extra );
							}

						} else {
							return makeArray( [], extra );
						}
					}

					try {
						return makeArray( context.querySelectorAll(query), extra );
					} catch(qsaError) {}

				} else if ( context.nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) {
					var oldContext = context,
						old = context.getAttribute( "id" ),
						nid = old || id,
						hasParent = context.parentNode,
						relativeHierarchySelector = /^\s*[+~]/.test( query );

					if ( !old ) {
						context.setAttribute( "id", nid );
					} else {
						nid = nid.replace( /'/g, "\\$&" );
					}
					if ( relativeHierarchySelector && hasParent ) {
						context = context.parentNode;
					}

					try {
						if ( !relativeHierarchySelector || hasParent ) {
							return makeArray( context.querySelectorAll( "[id='" + nid + "'] " + query ), extra );
						}

					} catch(pseudoError) {
					} finally {
						if ( !old ) {
							oldContext.removeAttribute( "id" );
						}
					}
				}
			}

			return oldSizzle(query, context, extra, seed);
		};

		for ( var prop in oldSizzle ) {
			Sizzle[ prop ] = oldSizzle[ prop ];
		}

		div = null;
	})();
}

(function(){
	var html = document.documentElement,
		matches = html.matchesSelector || html.mozMatchesSelector || html.webkitMatchesSelector || html.msMatchesSelector;

	if ( matches ) {
		var disconnectedMatch = !matches.call( document.createElement( "div" ), "div" ),
			pseudoWorks = false;

		try {
			matches.call( document.documentElement, "[test!='']:sizzle" );

		} catch( pseudoError ) {
			pseudoWorks = true;
		}

		Sizzle.matchesSelector = function( node, expr ) {
			expr = expr.replace(/\=\s*([^'"\]]*)\s*\]/g, "='$1']");

			if ( !Sizzle.isXML( node ) ) {
				try {
					if ( pseudoWorks || !Expr.match.PSEUDO.test( expr ) && !/!=/.test( expr ) ) {
						var ret = matches.call( node, expr );

						if ( ret || !disconnectedMatch ||
								node.document && node.document.nodeType !== 11 ) {
							return ret;
						}
					}
				} catch(e) {}
			}

			return Sizzle(expr, null, null, [node]).length > 0;
		};
	}
})();

(function(){
	var div = document.createElement("div");

	div.innerHTML = "<div class='test e'></div><div class='test'></div>";

	if ( !div.getElementsByClassName || div.getElementsByClassName("e").length === 0 ) {
		return;
	}

	div.lastChild.className = "e";

	if ( div.getElementsByClassName("e").length === 1 ) {
		return;
	}

	Expr.order.splice(1, 0, "CLASS");
	Expr.find.CLASS = function( match, context, isXML ) {
		if ( typeof context.getElementsByClassName !== "undefined" && !isXML ) {
			return context.getElementsByClassName(match[1]);
		}
	};

	div = null;
})();

function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
	for ( var i = 0, l = checkSet.length; i < l; i++ ) {
		var elem = checkSet[i];

		if ( elem ) {
			var match = false;

			elem = elem[dir];

			while ( elem ) {
				if ( elem.sizcache === doneName ) {
					match = checkSet[elem.sizset];
					break;
				}

				if ( elem.nodeType === 1 && !isXML ){
					elem.sizcache = doneName;
					elem.sizset = i;
				}

				if ( elem.nodeName.toLowerCase() === cur ) {
					match = elem;
					break;
				}

				elem = elem[dir];
			}

			checkSet[i] = match;
		}
	}
}

function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
	for ( var i = 0, l = checkSet.length; i < l; i++ ) {
		var elem = checkSet[i];

		if ( elem ) {
			var match = false;

			elem = elem[dir];

			while ( elem ) {
				if ( elem.sizcache === doneName ) {
					match = checkSet[elem.sizset];
					break;
				}

				if ( elem.nodeType === 1 ) {
					if ( !isXML ) {
						elem.sizcache = doneName;
						elem.sizset = i;
					}

					if ( typeof cur !== "string" ) {
						if ( elem === cur ) {
							match = true;
							break;
						}

					} else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
						match = elem;
						break;
					}
				}

				elem = elem[dir];
			}

			checkSet[i] = match;
		}
	}
}

if ( document.documentElement.contains ) {
	Sizzle.contains = function( a, b ) {
		return a !== b && (a.contains ? a.contains(b) : true);
	};

} else if ( document.documentElement.compareDocumentPosition ) {
	Sizzle.contains = function( a, b ) {
		return !!(a.compareDocumentPosition(b) & 16);
	};

} else {
	Sizzle.contains = function() {
		return false;
	};
}

Sizzle.isXML = function( elem ) {
	var documentElement = (elem ? elem.ownerDocument || elem : 0).documentElement;

	return documentElement ? documentElement.nodeName !== "HTML" : false;
};

var posProcess = function( selector, context ) {
	var match,
		tmpSet = [],
		later = "",
		root = context.nodeType ? [context] : context;

	while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
		later += match[0];
		selector = selector.replace( Expr.match.PSEUDO, "" );
	}

	selector = Expr.relative[selector] ? selector + "*" : selector;

	for ( var i = 0, l = root.length; i < l; i++ ) {
		Sizzle( selector, root[i], tmpSet );
	}

	return Sizzle.filter( later, tmpSet );
};


window.Sizzle = Sizzle;

})();

Prototype._original_property = window.Sizzle;

;(function(engine) {
var extendElements = Prototype.Selector.extendElements;

function select(selector, scope) {
	return extendElements(engine(selector, scope || document));
}

function match(element, selector) {
	return engine.matches(selector, [element]).length == 1;
}

Prototype.Selector.engine = engine;
Prototype.Selector.select = select;
Prototype.Selector.match = match;
})(Sizzle);

window.Sizzle = Prototype._original_property;
delete Prototype._original_property;

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, accumulator, initial;

	if (options.hash) {
	  initial = {};
	  accumulator = function(result, key, value) {
		if (key in result) {
		  if (!Object.isArray(result[key])) result[key] = [result[key]];
		  result[key].push(value);
		} else result[key] = value;
		return result;
	  };
	} else {
	  initial = '';
	  accumulator = function(result, key, value) {
		value = value.gsub(/(\r)?\n/, '\r\n');
		value = encodeURIComponent(value);
		value = value.gsub(/%20/, '+');
		return result + (result ? '&' : '') + encodeURIComponent(key) + '=' + value;
	  }
	}

	return elements.inject(initial, 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)))) {
		  result = accumulator(result, key, value);
		}
	  }
	  return result;
	});
}
};

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


getElements: function(form) {
	var elements = $(form).getElementsByTagName('*');
	var element, results = [], serializers = Form.Element.Serializers;

	for (var i = 0; element = elements[i]; i++) {
	  if (serializers[element.tagName.toLowerCase()])
		results.push(Element.extend(element));
	}
	return results;
},

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);
	var element = form.findFirstElement();
	if (element) element.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 = (function() {
function input(element, value) {
	switch (element.type.toLowerCase()) {
	  case 'checkbox':
	  case 'radio':
		return inputSelector(element, value);
	  default:
		return valueSelector(element, value);
	}
}

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

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

function select(element, value) {
	if (Object.isUndefined(value))
	  return (element.type === 'select-one' ? selectOne : selectMany)(element);

	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);
	}
}

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

function selectMany(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(optionValue(opt));
	}
	return values;
}

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

return {
	input:         input,
	inputSelector: inputSelector,
	textarea:      valueSelector,
	select:        select,
	selectOne:     selectOne,
	selectMany:    selectMany,
	optionValue:   optionValue,
	button:        valueSelector
};
})();

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


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(GLOBAL) {
var DIV = document.createElement('div');
var docEl = document.documentElement;
var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl
&& 'onmouseleave' in docEl;

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
};


var isIELegacyEvent = function(event) { return false; };

if (window.attachEvent) {
	if (window.addEventListener) {
	  isIELegacyEvent = function(event) {
		return !(event instanceof window.Event);
	  };
	} else {
	  isIELegacyEvent = function(event) { return true; };
	}
}

var _isButton;

function _isButtonForDOMEvents(event, code) {
	return event.which ? (event.which === code + 1) : (event.button === code);
}

var legacyButtonMap = { 0: 1, 1: 4, 2: 2 };
function _isButtonForLegacyEvents(event, code) {
	return event.button === legacyButtonMap[code];
}

function _isButtonForWebKit(event, code) {
	switch (code) {
	  case 0: return event.which == 1 && !event.metaKey;
	  case 1: return event.which == 2 || (event.which == 1 && event.metaKey);
	  case 2: return event.which == 3;
	  default: return false;
	}
}

if (window.attachEvent) {
	if (!window.addEventListener) {
	  _isButton = _isButtonForLegacyEvents;
	} else {
	  _isButton = function(event, code) {
		return isIELegacyEvent(event) ? _isButtonForLegacyEvents(event, code) :
		 _isButtonForDOMEvents(event, code);
	  }
	}
} else if (Prototype.Browser.WebKit) {
	_isButton = _isButtonForWebKit;
} else {
	_isButton = _isButtonForDOMEvents;
}

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

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

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

function element(event) {
	return Element.extend(_element(event));
}

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 = _element(event), match = Prototype.Selector.match;
	if (!expression) return Element.extend(element);
	while (element) {
	  if (Object.isElement(element) && match(element, expression))
		return Element.extend(element);
	  element = element.parentNode;
	}
}

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 (window.attachEvent) {
	function _relatedTarget(event) {
	  var element;
	  switch (event.type) {
		case 'mouseover':
		case 'mouseenter':
		  element = event.fromElement;
		  break;
		case 'mouseout':
		case 'mouseleave':
		  element = event.toElement;
		  break;
		default:
		  return null;
	  }
	  return Element.extend(element);
	}

	var additionalMethods = {
	  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 (!isIELegacyEvent(event)) return event;

	  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
	  });

	  Object.extend(event, methods);
	  Object.extend(event, additionalMethods);

	  return event;
	};
} else {
	Event.extend = Prototype.K;
}

if (window.addEventListener) {
	Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
	Object.extend(Event.prototype, methods);
}

var EVENT_TRANSLATIONS = {
	mouseenter: 'mouseover',
	mouseleave: 'mouseout'
};

function getDOMEventName(eventName) {
	return EVENT_TRANSLATIONS[eventName] || eventName;
}

if (MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED)
	getDOMEventName = Prototype.K;

function getUniqueElementID(element) {
	if (element === window) return 0;

	if (typeof element._prototypeUID === 'undefined')
	  element._prototypeUID = Element.Storage.UID++;
	return element._prototypeUID;
}

function getUniqueElementID_IE(element) {
	if (element === window) return 0;
	if (element == document) return 1;
	return element.uniqueID;
}

if ('uniqueID' in DIV)
	getUniqueElementID = getUniqueElementID_IE;

function isCustomEvent(eventName) {
	return eventName.include(':');
}

Event._isCustomEvent = isCustomEvent;

function getRegistryForElement(element, uid) {
	var CACHE = GLOBAL.Event.cache;
	if (Object.isUndefined(uid))
	  uid = getUniqueElementID(element);
	if (!CACHE[uid]) CACHE[uid] = { element: element };
	return CACHE[uid];
}

function destroyRegistryForElement(element, uid) {
	if (Object.isUndefined(uid))
	  uid = getUniqueElementID(element);
	delete GLOBAL.Event.cache[uid];
}


function register(element, eventName, handler) {
	var registry = getRegistryForElement(element);
	if (!registry[eventName]) registry[eventName] = [];
	var entries = registry[eventName];

	var i = entries.length;
	while (i--)
	  if (entries[i].handler === handler) return null;

	var uid = getUniqueElementID(element);
	var responder = GLOBAL.Event._createResponder(uid, eventName, handler);
	var entry = {
	  responder: responder,
	  handler:   handler
	};

	entries.push(entry);
	return entry;
}

function unregister(element, eventName, handler) {
	var registry = getRegistryForElement(element);
	var entries = registry[eventName];
	if (!entries) return;

	var i = entries.length, entry;
	while (i--) {
	  if (entries[i].handler === handler) {
		entry = entries[i];
		break;
	  }
	}

	if (!entry) return;

	var index = entries.indexOf(entry);
	entries.splice(index, 1);

	return entry;
}


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

	if (entry === null) return element;

	var responder = entry.responder;
	if (isCustomEvent(eventName))
	  observeCustomEvent(element, eventName, responder);
	else
	  observeStandardEvent(element, eventName, responder);

	return element;
}

function observeStandardEvent(element, eventName, responder) {
	var actualEventName = getDOMEventName(eventName);
	if (element.addEventListener) {
	  element.addEventListener(actualEventName, responder, false);
	} else {
	  element.attachEvent('on' + actualEventName, responder);
	}
}

function observeCustomEvent(element, eventName, responder) {
	if (element.addEventListener) {
	  element.addEventListener('dataavailable', responder, false);
	} else {
	  element.attachEvent('ondataavailable', responder);
	  element.attachEvent('onlosecapture',   responder);
	}
}

function stopObserving(element, eventName, handler) {
	element = $(element);
	var handlerGiven = !Object.isUndefined(handler),
	 eventNameGiven = !Object.isUndefined(eventName);

	if (!eventNameGiven && !handlerGiven) {
	  stopObservingElement(element);
	  return element;
	}

	if (!handlerGiven) {
	  stopObservingEventName(element, eventName);
	  return element;
	}

	var entry = unregister(element, eventName, handler);

	if (!entry) return element;
	removeEvent(element, eventName, entry.responder);
	return element;
}

function stopObservingStandardEvent(element, eventName, responder) {
	var actualEventName = getDOMEventName(eventName);
	if (element.removeEventListener) {
	  element.removeEventListener(actualEventName, responder, false);
	} else {
	  element.detachEvent('on' + actualEventName, responder);
	}
}

function stopObservingCustomEvent(element, eventName, responder) {
	if (element.removeEventListener) {
	  element.removeEventListener('dataavailable', responder, false);
	} else {
	  element.detachEvent('ondataavailable', responder);
	  element.detachEvent('onlosecapture',   responder);
	}
}



function stopObservingElement(element) {
	var uid = getUniqueElementID(element),
	 registry = getRegistryForElement(element, uid);

	destroyRegistryForElement(element, uid);

	var entries, i;
	for (var eventName in registry) {
	  if (eventName === 'element') continue;

	  entries = registry[eventName];
	  i = entries.length;
	  while (i--)
		removeEvent(element, eventName, entries[i].responder);
	}
}

function stopObservingEventName(element, eventName) {
	var registry = getRegistryForElement(element);
	var entries = registry[eventName];
	if (!entries) return;
	delete registry[eventName];

	var i = entries.length;
	while (i--)
	  removeEvent(element, eventName, entries[i].responder);
}


function removeEvent(element, eventName, handler) {
	if (isCustomEvent(eventName))
	  stopObservingCustomEvent(element, eventName, handler);
	else
	  stopObservingStandardEvent(element, eventName, handler);
}



function getFireTarget(element) {
	if (element !== document) return element;
	if (document.createEvent && !element.dispatchEvent)
	  return document.documentElement;
	return element;
}

function fire(element, eventName, memo, bubble) {
	element = getFireTarget($(element));
	if (Object.isUndefined(bubble)) bubble = true;
	memo = memo || {};

	var event = fireEvent(element, eventName, memo, bubble);
	return Event.extend(event);
}

function fireEvent_DOM(element, eventName, memo, bubble) {
	var event = document.createEvent('HTMLEvents');
	event.initEvent('dataavailable', bubble, true);

	event.eventName = eventName;
	event.memo = memo;

	element.dispatchEvent(event);
	return event;
}

function fireEvent_IE(element, eventName, memo, bubble) {
	var event = document.createEventObject();
	event.eventType = bubble ? 'ondataavailable' : 'onlosecapture';

	event.eventName = eventName;
	event.memo = memo;

	element.fireEvent(event.eventType, event);
	return event;
}

var fireEvent = document.createEvent ? fireEvent_DOM : fireEvent_IE;



Event.Handler = Class.create({
	initialize: function(element, eventName, selector, callback) {
	  this.element   = $(element);
	  this.eventName = eventName;
	  this.selector  = selector;
	  this.callback  = callback;
	  this.handler   = this.handleEvent.bind(this);
	},


	start: function() {
	  Event.observe(this.element, this.eventName, this.handler);
	  return this;
	},

	stop: function() {
	  Event.stopObserving(this.element, this.eventName, this.handler);
	  return this;
	},

	handleEvent: function(event) {
	  var element = Event.findElement(event, this.selector);
	  if (element) this.callback.call(this.element, event, element);
	}
});

function on(element, eventName, selector, callback) {
	element = $(element);
	if (Object.isFunction(selector) && Object.isUndefined(callback)) {
	  callback = selector, selector = null;
	}

	return new Event.Handler(element, eventName, selector, callback).start();
}

Object.extend(Event, Event.Methods);

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

Element.addMethods({
	fire:          fire,

	observe:       observe,

	stopObserving: stopObserving,

	on:            on
});

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

	observe:       observe.methodize(),

	stopObserving: stopObserving.methodize(),

	on:            on.methodize(),

	loaded:        false
});

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

GLOBAL.Event.cache = {};

function destroyCache_IE() {
	GLOBAL.Event.cache = null;
}

if (window.attachEvent)
	window.attachEvent('onunload', destroyCache_IE);

DIV = null;
docEl = null;
})(this);

(function(GLOBAL) {
/* Code for creating leak-free event responders is based on work by
John-David Dalton. */

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

function isSimulatedMouseEnterLeaveEvent(eventName) {
	return !MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED &&
	 (eventName === 'mouseenter' || eventName === 'mouseleave');
}

function createResponder(uid, eventName, handler) {
	if (Event._isCustomEvent(eventName))
	  return createResponderForCustomEvent(uid, eventName, handler);
	if (isSimulatedMouseEnterLeaveEvent(eventName))
	  return createMouseEnterLeaveResponder(uid, eventName, handler);

	return function(event) {
	  var cacheEntry = Event.cache[uid];
	  var element = cacheEntry.element;

	  Event.extend(event, element);
	  handler.call(element, event);
	};
}

function createResponderForCustomEvent(uid, eventName, handler) {
	return function(event) {
	  var cacheEntry = Event.cache[uid], element = cacheEntry.element;

	  if (Object.isUndefined(event.eventName))
		return false;

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

	  Event.extend(event, element);
	  handler.call(element, event);
	};
}

function createMouseEnterLeaveResponder(uid, eventName, handler) {
	return function(event) {
	  var cacheEntry = Event.cache[uid], element = cacheEntry.element;

	  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);
	}
}

GLOBAL.Event._createResponder = createResponder;
docEl = null;
})(this);

(function(GLOBAL) {
/* 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.detachEvent('onreadystatechange', 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.attachEvent('onreadystatechange', checkReadyState);
	if (window == top) TIMER = pollDoScroll.defer();
}

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


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

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);

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

(function() {
window.Selector = Class.create({
	initialize: function(expression) {
	  this.expression = expression.strip();
	},

	findElements: function(rootElement) {
	  return Prototype.Selector.select(this.expression, rootElement);
	},

	match: function(element) {
	  return Prototype.Selector.match(element, this.expression);
	},

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

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

Object.extend(Selector, {
	matchElements: function(elements, expression) {
	  var match = Prototype.Selector.match,
		  results = [];

	  for (var i = 0, length = elements.length; i < length; i++) {
		var element = elements[i];
		if (match(element, expression)) {
		  results.push(Element.extend(element));
		}
	  }
	  return results;
	},

	findElement: function(elements, expression, index) {
	  index = index || 0;
	  var matchIndex = 0, element;
	  for (var i = 0, length = elements.length; i < length; i++) {
		element = elements[i];
		if (Prototype.Selector.match(element, expression) && index === matchIndex++) {
		  return Element.extend(element);
		}
	  }
	},

	findChildElements: function(element, expressions) {
	  var selector = expressions.toArray().join(', ');
	  return Prototype.Selector.select(selector, element || document);
	}
});
})();
