/*  Prototype JavaScript framework, version 1.4.0
 *  (c) 2005 Sam Stephenson <sam@conio.net>
 *
 *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
 *  against the source tree, available from the Prototype darcs repository.
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *
 *  For details, see the Prototype web site: http://prototype.conio.net/
 *
/*--------------------------------------------------------------------------*/

var Prototype = {
	Version : '1.4.0',
	ScriptFragment : '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',

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

var Class = {
	create : function() {
		return function() {
			this.initialize.apply(this, arguments);
		}
	}
}

var Abstract = new Object();

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

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

Function.prototype.bind = function() {
	var __method = this, args = $A(arguments), object = args.shift();
	return function() {
		return __method.apply(object, args.concat($A(arguments)));
	}
}

Function.prototype.bindAsEventListener = function(object) {
	var __method = this;
	return function(event) {
		return __method.call(object, event || window.event);
	}
}

Object.extend(Number.prototype, {
	toColorPart : function() {
		var digits = this.toString(16);
		if (this < 16)
			return '0' + digits;
		return digits;
	},

	succ : function() {
		return this + 1;
	},

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

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

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

		return returnValue;
	}
}

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

var PeriodicalExecuter = Class.create();
PeriodicalExecuter.prototype = {
	initialize : function(callback, frequency) {
		this.callback = callback;
		this.frequency = frequency;
		this.currentlyExecuting = false;

		this.registerCallback();
	},

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

	onTimerEvent : function() {
		if (!this.currentlyExecuting) {
			try {
				this.currentlyExecuting = true;
				this.callback();
			} finally {
				this.currentlyExecuting = false;
			}
		}
	}
}

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

function $() {
	var elements = new Array();

	for ( var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);

		if (arguments.length == 1)
			return element;

		elements.push(element);
	}

	return elements;
}
Object.extend(String.prototype, {
	stripTags : function() {
		return this.replace(/<\/?[^>]+>/gi, '');
	},

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

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

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

	escapeHTML : function() {
		var div = document.createElement('div');
		var text = document.createTextNode(this);
		div.appendChild(text);
		return div.innerHTML;
	},

	unescapeHTML : function() {
		var div = document.createElement('div');
		div.innerHTML = this.stripTags();
		return div.childNodes[0] ? div.childNodes[0].nodeValue : '';
	},

	toQueryParams : function() {
		var pairs = this.match(/^\??(.*)$/)[1].split('&');
		return pairs.inject( {}, function(params, pairString) {
			var pair = pairString.split('=');
			params[pair[0]] = pair[1];
			return params;
		});
	},

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

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

		var camelizedString = this.indexOf('-') == 0 ? oStringList[0].charAt(0)
				.toUpperCase()
				+ oStringList[0].substring(1) : oStringList[0];

		for ( var i = 1, len = oStringList.length; i < len; i++) {
			var s = oStringList[i];
			camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
		}

		return camelizedString;
	},

	inspect : function() {
		return "'" + this.replace('\\', '\\\\').replace("'", '\\\'') + "'";
	}
});

String.prototype.parseQuery = String.prototype.toQueryParams;

var $break = new Object();
var $continue = new Object();

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

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

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

	collect : function(iterator) {
		var results = [];
		this.each(function(value, index) {
			results.push(iterator(value, index));
		});
		return results;
	},

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

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

	grep : function(pattern, iterator) {
		var results = [];
		this.each(function(value, index) {
			var stringValue = value.toString();
			if (stringValue.match(pattern))
				results.push((iterator || Prototype.K)(value, index));
		})
		return results;
	},

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

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

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

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

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

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

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

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

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

	toArray : function() {
		return this.collect(Prototype.K);
	},

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

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

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

Object.extend(Enumerable, {
	map : Enumerable.collect,
	find : Enumerable.detect,
	select : Enumerable.findAll,
	member : Enumerable.include,
	entries : Enumerable.toArray
});
var $A = Array.from = function(iterable) {
	if (!iterable)
		return [];
	if (iterable.toArray) {
		return iterable.toArray();
	} else {
		var results = [];
		for ( var i = 0; i < iterable.length; i++)
			results.push(iterable[i]);
		return results;
	}
}

Object.extend(Array.prototype, Enumerable);

Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
	_each : function(iterator) {
		for ( var i = 0; i < this.length; i++)
			iterator(this[i]);
	},

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

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

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

	compact : function() {
		return this.select(function(value) {
			return value != undefined || value != null;
		});
	},

	flatten : function() {
		return this.inject( [], function(array, value) {
			return array.concat(value.constructor == Array ? value.flatten()
					: [ value ]);
		});
	},

	without : function() {
		var values = $A(arguments);
		return this.select(function(value) {
			return !values.include(value);
		});
	},

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

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

	shift : function() {
		var result = this[0];
		for ( var i = 0; i < this.length - 1; i++)
			this[i] = this[i + 1];
		this.length--;
		return result;
	},

	inspect : function() {
		return '[' + this.map(Object.inspect).join(', ') + ']';
	}
});
var Hash = {
	_each : function(iterator) {
		for (key in this) {
			var value = this[key];
			if (typeof value == 'function')
				continue;

			var pair = [ key, value ];
			pair.key = key;
			pair.value = value;
			iterator(pair);
		}
	},

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

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

	merge : function(hash) {
		return $H(hash).inject($H(this), function(mergedHash, pair) {
			mergedHash[pair.key] = pair.value;
			return mergedHash;
		});
	},

	toQueryString : function() {
		return this.map(function(pair) {
			return pair.map(encodeURIComponent).join('=');
		}).join('&');
	},

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

function $H(object) {
	var hash = Object.extend( {}, object || {});
	Object.extend(hash, Enumerable);
	Object.extend(hash, Hash);
	return hash;
}
ObjectRange = Class.create();
Object.extend(ObjectRange.prototype, Enumerable);
Object.extend(ObjectRange.prototype, {
	initialize : function(start, end, exclusive) {
		this.start = start;
		this.end = end;
		this.exclusive = exclusive;
	},

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

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

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

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

	activeRequestCount : 0
}

Ajax.Responders = {
	responders : [],

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

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

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

	dispatch : function(callback, request, transport, json) {
		this
				.each(function(responder) {
					if (responder[callback]
							&& typeof responder[callback] == 'function') {
						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 = function() {
};
Ajax.Base.prototype = {
	setOptions : function(options) {
		this.options = {
			method : 'post',
			asynchronous : true,
			parameters : ''
		}
		Object.extend(this.options, options || {});
	},

	responseIsSuccess : function() {
		return this.transport.status == undefined
				|| this.transport.status == 0
				|| (this.transport.status >= 200 && this.transport.status < 300);
	},

	responseIsFailure : function() {
		return !this.responseIsSuccess();
	}
}

Ajax.Request = Class.create();
Ajax.Request.Events = [ 'Uninitialized', 'Loading', 'Loaded', 'Interactive',
		'Complete' ];

Ajax.Request.prototype = Object
		.extend(
				new Ajax.Base(),
				{
					initialize : function(url, options) {
						this.transport = Ajax.getTransport();
						this.setOptions(options);
						this.request(url);
					},

					request : function(url) {
						var parameters = this.options.parameters || '';
						if (parameters.length > 0)
							parameters += '&_=';

						try {
							this.url = url;
							if (this.options.method == 'get'
									&& parameters.length > 0)
								this.url += (this.url.match(/\?/) ? '&' : '?')
										+ parameters;

							Ajax.Responders.dispatch('onCreate', this,
									this.transport);

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

							if (this.options.asynchronous) {
								this.transport.onreadystatechange = this.onStateChange
										.bind(this);
								setTimeout((function() {
									this.respondToReadyState(1)
								}).bind(this), 10);
							}

							this.setRequestHeaders();

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

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

					setRequestHeaders : function() {
						var requestHeaders = [ 'X-Requested-With',
								'XMLHttpRequest', 'X-Prototype-Version',
								Prototype.Version ];

						if (this.options.method == 'post') {
							requestHeaders.push('Content-type',
									'application/x-www-form-urlencoded');

							/*
							 * Force "Connection: close" for Mozilla browsers to
							 * work around a bug where XMLHttpReqeuest sends an
							 * incorrect Content-length header. See Mozilla
							 * Bugzilla #246651.
							 */
							if (this.transport.overrideMimeType)
								requestHeaders.push('Connection', 'close');
						}

						if (this.options.requestHeaders)
							requestHeaders.push.apply(requestHeaders,
									this.options.requestHeaders);

						for ( var i = 0; i < requestHeaders.length; i += 2)
							this.transport.setRequestHeader(requestHeaders[i],
									requestHeaders[i + 1]);
					},

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

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

					evalJSON : function() {
						try {
							return eval(this.header('X-JSON'));
						} catch (e) {
						}
					},

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

					respondToReadyState : function(readyState) {
						var event = Ajax.Request.Events[readyState];
						var transport = this.transport, json = this.evalJSON();

						if (event == 'Complete') {
							try {
								(this.options['on' + this.transport.status]
										|| this.options['on' + (this
												.responseIsSuccess() ? 'Success'
												: 'Failure')] || Prototype.emptyFunction)
										(transport, json);
							} catch (e) {
								this.dispatchException(e);
							}

							if ((this.header('Content-type') || '')
									.match(/^text\/javascript/i))
								this.evalResponse();
						}

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

						/*
						 * Avoid memory leak in MSIE: clean up the oncomplete
						 * event handler
						 */
						if (event == 'Complete')
							this.transport.onreadystatechange = Prototype.emptyFunction;
					},

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

Ajax.Updater = Class.create();

Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
	initialize : function(container, url, options) {
		this.containers = {
			success : container.success ? $(container.success) : $(container),
			failure : container.failure ? $(container.failure)
					: (container.success ? null : $(container))
		}

		this.transport = Ajax.getTransport();
		this.setOptions(options);

		var onComplete = this.options.onComplete || Prototype.emptyFunction;
		this.options.onComplete = (function(transport, object) {
			this.updateContent();
			onComplete(transport, object);
		}).bind(this);

		this.request(url);
	},

	updateContent : function() {
		var receiver = this.responseIsSuccess() ? this.containers.success
				: this.containers.failure;
		var response = this.transport.responseText;

		if (!this.options.evalScripts)
			response = response.stripScripts();

		if (receiver) {
			if (this.options.insertion) {
				new this.options.insertion(receiver, response);
			} else {
				Element.update(receiver, response);
			}
		}

		if (this.responseIsSuccess()) {
			if (this.onComplete)
				setTimeout(this.onComplete.bind(this), 10);
		}
	}
});

Ajax.PeriodicalUpdater = Class.create();
Ajax.PeriodicalUpdater.prototype = Object
		.extend(
				new Ajax.Base(),
				{
					initialize : function(container, url, options) {
						this.setOptions(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.onComplete = undefined;
						clearTimeout(this.timer);
						(this.onComplete || Prototype.emptyFunction).apply(
								this, arguments);
					},

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

							this.lastText = request.responseText;
						}
						this.timer = setTimeout(this.onTimerEvent.bind(this),
								this.decay * this.frequency * 1000);
					},

					onTimerEvent : function() {
						this.updater = new Ajax.Updater(this.container,
								this.url, this.options);
					}
				});
document.getElementsByClassName = function(className, parentElement) {
	var children = ($(parentElement) || document.body)
			.getElementsByTagName('*');
	return $A(children).inject(
			[],
			function(elements, child) {
				if (child.className.match(new RegExp("(^|\\s)" + className
						+ "(\\s|$)")))
					elements.push(child);
				return elements;
			});
}

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

if (!window.Element) {
	var Element = new Object();
}

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

					toggle : function() {
						for ( var i = 0; i < arguments.length; i++) {
							var element = $(arguments[i]);
							Element[Element.visible(element) ? 'hide' : 'show']
									(element);
						}
					},

					hide : function() {
						for ( var i = 0; i < arguments.length; i++) {
							var element = $(arguments[i]);
							element.style.display = 'none';
						}
					},

					show : function() {
						for ( var i = 0; i < arguments.length; i++) {
							var element = $(arguments[i]);
							element.style.display = '';
						}
					},

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

					update : function(element, html) {
						$(element).innerHTML = html.stripScripts();
						setTimeout(function() {
							html.evalScripts()
						}, 10);
					},

					getHeight : function(element) {
						element = $(element);
						return element.offsetHeight;
					},

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

					hasClassName : function(element, className) {
						if (!(element = $(element)))
							return;
						return Element.classNames(element).include(className);
					},

					addClassName : function(element, className) {
						if (!(element = $(element)))
							return;
						return Element.classNames(element).add(className);
					},

					removeClassName : function(element, className) {
						if (!(element = $(element)))
							return;
						return Element.classNames(element).remove(className);
					},

					// removes whitespace-only text node children
					cleanWhitespace : function(element) {
						element = $(element);
						for ( var i = 0; i < element.childNodes.length; i++) {
							var node = element.childNodes[i];
							if (node.nodeType == 3
									&& !/\S/.test(node.nodeValue))
								Element.remove(node);
						}
					},

					empty : function(element) {
						return $(element).innerHTML.match(/^\s*$/);
					},

					scrollTo : function(element) {
						element = $(element);
						var x = element.x ? element.x : element.offsetLeft, y = element.y ? element.y
								: element.offsetTop;
						window.scrollTo(x, y);
					},

					getStyle : function(element, style) {
						element = $(element);
						var value = element.style[style.camelize()];
						if (!value) {
							if (document.defaultView
									&& document.defaultView.getComputedStyle) {
								var css = document.defaultView
										.getComputedStyle(element, null);
								value = css ? css.getPropertyValue(style)
										: null;
							} else if (element.currentStyle) {
								value = element.currentStyle[style.camelize()];
							}
						}

						if (window.opera
								&& [ 'left', 'top', 'right', 'bottom' ]
										.include(style))
							if (Element.getStyle(element, 'position') == 'static')
								value = 'auto';

						return value == 'auto' ? null : value;
					},

					setStyle : function(element, style) {
						element = $(element);
						for (name in style)
							element.style[name.camelize()] = style[name];
					},

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

						// All *Width and *Height properties give 0 on elements
						// with display none,
						// so enable the element temporarily
						var els = element.style;
						var originalVisibility = els.visibility;
						var originalPosition = els.position;
						els.visibility = 'hidden';
						els.position = 'absolute';
						els.display = '';
						var originalWidth = element.clientWidth;
						var originalHeight = element.clientHeight;
						els.display = 'none';
						els.position = originalPosition;
						els.visibility = originalVisibility;
						return {
							width : originalWidth,
							height : originalHeight
						};
					},

					makePositioned : function(element) {
						element = $(element);
						var pos = Element.getStyle(element, 'position');
						if (pos == 'static' || !pos) {
							element._madePositioned = true;
							element.style.position = 'relative';
							// Opera returns the offset relative to the
							// positioning context, when an
							// element is position relative but top and left
							// have not been defined
							if (window.opera) {
								element.style.top = 0;
								element.style.left = 0;
							}
						}
					},

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

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

					undoClipping : function(element) {
						element = $(element);
						if (element._overflow)
							return;
						element.style.overflow = element._overflow;
						element._overflow = undefined;
					}
				});

var Toggle = new Object();
Toggle.display = Element.toggle;

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

Abstract.Insertion = function(adjacency) {
	this.adjacency = adjacency;
}

Abstract.Insertion.prototype = {
	initialize : function(element, content) {
		this.element = $(element);
		this.content = content.stripScripts();

		if (this.adjacency && this.element.insertAdjacentHTML) {
			try {
				this.element.insertAdjacentHTML(this.adjacency, this.content);
			} catch (e) {
				if (this.element.tagName.toLowerCase() == 'tbody'
						|| this.element.tagName.toLowerCase() == 'tr') {
					this.insertContent(this.contentFromAnonymousTable());
				} else {
					throw e;
				}
			}
		} else {
			this.range = this.element.ownerDocument.createRange();
			if (this.initializeRange)
				this.initializeRange();
			this.insertContent( [ this.range
					.createContextualFragment(this.content) ]);
		}

		setTimeout(function() {
			content.evalScripts()
		}, 10);
	},

	contentFromAnonymousTable : function() {
		var div = document.createElement('div');
		div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
		return $A(div.childNodes[0].childNodes[0].childNodes);
	}
}

var Insertion = new Object();

Insertion.Before = Class.create();
Insertion.Before.prototype = Object.extend(
		new Abstract.Insertion('beforeBegin'), {
			initializeRange : function() {
				this.range.setStartBefore(this.element);
			},

			insertContent : function(fragments) {
				fragments.each((function(fragment) {
					this.element.parentNode
							.insertBefore(fragment, this.element);
				}).bind(this));
			}
		});

Insertion.Top = Class.create();
Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
	initializeRange : function() {
		this.range.selectNodeContents(this.element);
		this.range.collapse(true);
	},

	insertContent : function(fragments) {
		fragments.reverse(false).each((function(fragment) {
			this.element.insertBefore(fragment, this.element.firstChild);
		}).bind(this));
	}
});

Insertion.Bottom = Class.create();
Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'),
		{
			initializeRange : function() {
				this.range.selectNodeContents(this.element);
				this.range.collapse(this.element);
			},

			insertContent : function(fragments) {
				fragments.each((function(fragment) {
					this.element.appendChild(fragment);
				}).bind(this));
			}
		});

Insertion.After = Class.create();
Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
	initializeRange : function() {
		this.range.setStartAfter(this.element);
	},

	insertContent : function(fragments) {
		fragments.each((function(fragment) {
			this.element.parentNode.insertBefore(fragment,
					this.element.nextSibling);
		}).bind(this));
	}
});

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

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

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

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

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

	remove : function(classNameToRemove) {
		if (!this.include(classNameToRemove))
			return;
		this.set(this.select(function(className) {
			return className != classNameToRemove;
		}).join(' '));
	},

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

Object.extend(Element.ClassNames.prototype, Enumerable);
var Field = {
	clear : function() {
		for ( var i = 0; i < arguments.length; i++)
			$(arguments[i]).value = '';
	},

	focus : function(element) {
		$(element).focus();
	},

	present : function() {
		for ( var i = 0; i < arguments.length; i++)
			if ($(arguments[i]).value == '')
				return false;
		return true;
	},

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

	activate : function(element) {
		element = $(element);
		element.focus();
		if (element.select)
			element.select();
	}
}

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

var Form = {
	serialize : function(form) {
		var elements = Form.getElements($(form));
		var queryComponents = new Array();

		for ( var i = 0; i < elements.length; i++) {
			var queryComponent = Form.Element.serialize(elements[i]);
			if (queryComponent)
				queryComponents.push(queryComponent);
		}

		return queryComponents.join('&');
	},

	getElements : function(form) {
		form = $(form);
		var elements = new Array();

		for (tagName in Form.Element.Serializers) {
			var tagElements = form.getElementsByTagName(tagName);
			for ( var j = 0; j < tagElements.length; j++)
				elements.push(tagElements[j]);
		}
		return elements;
	},

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

		if (!typeName && !name)
			return inputs;

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

		return matchingInputs;
	},

	disable : function(form) {
		var elements = Form.getElements(form);
		for ( var i = 0; i < elements.length; i++) {
			var element = elements[i];
			element.blur();
			element.disabled = 'true';
		}
	},

	enable : function(form) {
		var elements = Form.getElements(form);
		for ( var i = 0; i < elements.length; i++) {
			var element = elements[i];
			element.disabled = '';
		}
	},

	findFirstElement : function(form) {
		return Form.getElements(form).find(
				function(element) {
					return element.type != 'hidden'
							&& !element.disabled
							&& [ 'input', 'select', 'textarea' ]
									.include(element.tagName.toLowerCase());
				});
	},

	focusFirstElement : function(form) {
		Field.activate(Form.findFirstElement(form));
	},

	reset : function(form) {
		$(form).reset();
	}
}

Form.Element = {
	serialize : function(element) {
		element = $(element);
		var method = element.tagName.toLowerCase();
		var parameter = Form.Element.Serializers[method](element);

		if (parameter) {
			var key = encodeURIComponent(parameter[0]);
			if (key.length == 0)
				return;

			if (parameter[1].constructor != Array)
				parameter[1] = [ parameter[1] ];

			return parameter[1].map(function(value) {
				return key + '=' + encodeURIComponent(value);
			}).join('&');
		}
	},

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

		if (parameter)
			return parameter[1];
	}
}

Form.Element.Serializers = {
	input : function(element) {
		switch (element.type.toLowerCase()) {
		case 'submit':
		case 'hidden':
		case 'password':
		case 'text':
			return Form.Element.Serializers.textarea(element);
		case 'checkbox':
		case 'radio':
			return Form.Element.Serializers.inputSelector(element);
		}
		return false;
	},

	inputSelector : function(element) {
		if (element.checked)
			return [ element.name, element.value ];
	},

	textarea : function(element) {
		return [ element.name, element.value ];
	},

	select : function(element) {
		return Form.Element.Serializers[element.type == 'select-one' ? 'selectOne'
				: 'selectMany'](element);
	},

	selectOne : function(element) {
		var value = '', opt, index = element.selectedIndex;
		if (index >= 0) {
			opt = element.options[index];
			value = opt.value;
			if (!value && !('value' in opt))
				value = opt.text;
		}
		return [ element.name, value ];
	},

	selectMany : function(element) {
		var value = new Array();
		for ( var i = 0; i < element.length; i++) {
			var opt = element.options[i];
			if (opt.selected) {
				var optValue = opt.value;
				if (!optValue && !('value' in opt))
					optValue = opt.text;
				value.push(optValue);
			}
		}
		return [ element.name, value ];
	}
}

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

var $F = Form.Element.getValue;

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

Abstract.TimedObserver = function() {
}
Abstract.TimedObserver.prototype = {
	initialize : function(element, frequency, callback) {
		this.frequency = frequency;
		this.element = $(element);
		this.callback = callback;

		this.lastValue = this.getValue();
		this.registerCallback();
	},

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

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

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

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

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

Abstract.EventObserver = function() {
}
Abstract.EventObserver.prototype = {
	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() {
		var elements = Form.getElements(this.element);
		for ( var i = 0; i < elements.length; i++)
			this.registerCallback(elements[i]);
	},

	registerCallback : function(element) {
		if (element.type) {
			switch (element.type.toLowerCase()) {
			case 'checkbox':
			case 'radio':
				Event.observe(element, 'click', this.onElementEvent.bind(this));
				break;
			case 'password':
			case 'text':
			case 'textarea':
			case 'select-one':
			case 'select-multiple':
				Event
						.observe(element, 'change', this.onElementEvent
								.bind(this));
				break;
			}
		}
	}
}

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

Form.EventObserver = Class.create();
Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
	getValue : function() {
		return Form.serialize(this.element);
	}
});
if (!window.Event) {
	var Event = new Object();
}

Object
		.extend(
				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,

					element : function(event) {
						return event.target || event.srcElement;
					},

					isLeftClick : function(event) {
						return (((event.which) && (event.which == 1)) || ((event.button) && (event.button == 1)));
					},

					pointerX : function(event) {
						return event.pageX
								|| (event.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft));
					},

					pointerY : function(event) {
						return event.pageY
								|| (event.clientY + (document.documentElement.scrollTop || document.body.scrollTop));
					},

					stop : function(event) {
						if (event.preventDefault) {
							event.preventDefault();
							event.stopPropagation();
						} else {
							event.returnValue = false;
							event.cancelBubble = true;
						}
					},

					// find the first node with the given tagName, starting from
					// the
					// node the event was triggered on; traverses the DOM
					// upwards
					findElement : function(event, tagName) {
						var element = Event.element(event);
						while (element.parentNode
								&& (!element.tagName || (element.tagName
										.toUpperCase() != tagName.toUpperCase())))
							element = element.parentNode;
						return element;
					},

					observers : false,

					_observeAndCache : function(element, name, observer,
							useCapture) {
						if (!this.observers)
							this.observers = [];
						if (element.addEventListener) {
							this.observers.push( [ element, name, observer,
									useCapture ]);
							element
									.addEventListener(name, observer,
											useCapture);
						} else if (element.attachEvent) {
							this.observers.push( [ element, name, observer,
									useCapture ]);
							element.attachEvent('on' + name, observer);
						}
					},

					unloadCache : function() {
						if (!Event.observers)
							return;
						for ( var i = 0; i < Event.observers.length; i++) {
							Event.stopObserving.apply(this, Event.observers[i]);
							Event.observers[i][0] = null;
						}
						Event.observers = false;
					},

					observe : function(element, name, observer, useCapture) {
						var element = $(element);
						useCapture = useCapture || false;

						if (name == 'keypress'
								&& (navigator.appVersion
										.match(/Konqueror|Safari|KHTML/) || element.attachEvent))
							name = 'keydown';

						this._observeAndCache(element, name, observer,
								useCapture);
					},

					stopObserving : function(element, name, observer,
							useCapture) {
						var element = $(element);
						useCapture = useCapture || false;

						if (name == 'keypress'
								&& (navigator.appVersion
										.match(/Konqueror|Safari|KHTML/) || element.detachEvent))
							name = 'keydown';

						if (element.removeEventListener) {
							element.removeEventListener(name, observer,
									useCapture);
						} else if (element.detachEvent) {
							element.detachEvent('on' + name, observer);
						}
					}
				});

/* prevent memory leaks in IE */
Event.observe(window, 'unload', Event.unloadCache, false);
var Position = {
	// set to true if needed, warning: firefox performance problems
	// NOT neeeded for page scrolling, only if draggable contained in
	// scrollable elements
	includeScrollOffsets : false,

	// must be called before calling withinIncludingScrolloffset, every time the
	// page is scrolled
	prepare : function() {
		this.deltaX = window.pageXOffset || document.documentElement.scrollLeft
				|| document.body.scrollLeft || 0;
		this.deltaY = window.pageYOffset || document.documentElement.scrollTop
				|| document.body.scrollTop || 0;
	},

	realOffset : function(element) {
		var valueT = 0, valueL = 0;
		do {
			valueT += element.scrollTop || 0;
			valueL += element.scrollLeft || 0;
			element = element.parentNode;
		} while (element);
		return [ valueL, valueT ];
	},

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

	positionedOffset : function(element) {
		var valueT = 0, valueL = 0;
		do {
			valueT += element.offsetTop || 0;
			valueL += element.offsetLeft || 0;
			element = element.offsetParent;
			if (element) {
				p = Element.getStyle(element, 'position');
				if (p == 'relative' || p == 'absolute')
					break;
			}
		} while (element);
		return [ valueL, valueT ];
	},

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

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

		return document.body;
	},

	// caches x/y coordinate pair to use with overlap
	within : function(element, x, y) {
		if (this.includeScrollOffsets)
			return this.withinIncludingScrolloffsets(element, x, y);
		this.xcomp = x;
		this.ycomp = y;
		this.offset = this.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 = this.realOffset(element);

		this.xcomp = x + offsetcache[0] - this.deltaX;
		this.ycomp = y + offsetcache[1] - this.deltaY;
		this.offset = this.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);
	},

	// within must be called directly before
	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;
	},

	clone : function(source, target) {
		source = $(source);
		target = $(target);
		target.style.position = 'absolute';
		var offsets = this.cumulativeOffset(source);
		target.style.top = offsets[1] + 'px';
		target.style.left = offsets[0] + 'px';
		target.style.width = source.offsetWidth + 'px';
		target.style.height = source.offsetHeight + 'px';
	},

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

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

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

		} while (element = element.offsetParent);

		element = forElement;
		do {
			valueT -= element.scrollTop || 0;
			valueL -= element.scrollLeft || 0;
		} while (element = element.parentNode);

		return [ valueL, valueT ];
	},

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

		// find page position of source
		source = $(source);
		var p = Position.page(source);

		// find coordinate system to use
		target = $(target);
		var delta = [ 0, 0 ];
		var parent = null;
		// delta [0,0] will do fine with position: fixed elements,
		// position:absolute needs offsetParent deltas
		if (Element.getStyle(target, 'position') == 'absolute') {
			parent = Position.offsetParent(target);
			delta = Position.page(parent);
		}

		// correct by body offsets (fixes Safari)
		if (parent == document.body) {
			delta[0] -= document.body.offsetLeft;
			delta[1] -= document.body.offsetTop;
		}

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

	absolutize : function(element) {
		element = $(element);
		if (element.style.position == 'absolute')
			return;
		Position.prepare();

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

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

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

	relativize : function(element) {
		element = $(element);
		if (element.style.position == 'relative')
			return;
		Position.prepare();

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

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

// Safari returns margins on body which is incorrect if the child is absolutely
// positioned. For performance reasons, redefine Position.cumulativeOffset for
// KHTML/WebKit only.
if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
	Position.cumulativeOffset = function(element) {
		var valueT = 0, valueL = 0;
		do {
			valueT += element.offsetTop || 0;
			valueL += element.offsetLeft || 0;
			if (element.offsetParent == document.body)
				if (Element.getStyle(element, 'position') == 'absolute')
					break;

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

		return [ valueL, valueT ];
	}
}