/*	Prototype JavaScript framework, version 1.5.0_rc0
 *	(c) 2005 Sam Stephenson <sam@conio.net>
 *
 *	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: '1.5.0_rc0',
	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 (var 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;
			}
		}
	}
}
Object.extend(String.prototype, {
	gsub: function(pattern, replacement) {
		var result = '', source = this, match;
		replacement = arguments.callee.prepareReplacement(replacement);

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

	sub: function(pattern, replacement, count) {
		replacement = this.gsub.prepareReplacement(replacement);
		count = count === undefined ? 1 : count;

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

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

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

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

	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(function(script) { return eval(script) });
	},

	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(/\\/g, '\\\\').replace(/'/g, '\\\'') + "'";
	}
});

String.prototype.gsub.prepareReplacement = function(replacement) {
	if (typeof replacement == 'function') return replacement;
	var template = new Template(replacement);
	return function(match) { return template.evaluate(match) };
}

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

var Template = Class.create();
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
Template.prototype = {
	initialize: function(template, pattern) {
		this.template = template.toString();
		this.pattern	= pattern || Template.Pattern;
	},

	evaluate: function(object) {
		return this.template.gsub(this.pattern, function(match) {
			var before = match[1];
			if (before == '\\') return match[2];
			return before + (object[match[3]] || '').toString();
		});
	}
}

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 (result == undefined || value >= result)
				result = value;
		});
		return result;
	},

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

	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);

if (!Array.prototype._reverse)
	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 && 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();
	},

	inspect: function() {
		return '[' + this.map(Object.inspect).join(', ') + ']';
	}
});
var Hash = {
	_each: function(iterator) {
		for (var 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 XMLHttpRequest()},
			function() {return new ActiveXObject('Msxml2.XMLHTTP')},
			function() {return new ActiveXObject('Microsoft.XMLHTTP')}
		) || false;
	},

	activeRequestCount: 0
}

Ajax.Responders = {
	responders: [],

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

	register: function(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,
			contentType:	'application/x-www-form-urlencoded',
			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,
			 'Accept', 'text/javascript, text/html, application/xml, text/xml, */*'];

		if (this.options.method == 'post') {
			requestHeaders.push('Content-type', this.options.contentType);

			/* 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);
	}
});
function $() {
	var results = [], element;
	for (var i = 0; i < arguments.length; i++) {
		element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		results.push(Element.extend(element));
	}
	return results.length < 2 ? results[0] : results;
}

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(Element.extend(child));
		return elements;
	});
}

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

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

Element.extend = function(element) {
	if (!element) return;
	if (_nativeExtensions) return element;

	if (!element._extended && element.tagName && element != window) {
		var methods = Element.Methods, cache = Element.extend.cache;
		for (property in methods) {
			var value = methods[property];
			if (typeof value == 'function')
				element[property] = cache.findOrStore(value);
		}
	}

	element._extended = true;
	return element;
}

Element.extend.cache = {
	findOrStore: function(value) {
		return this[value] = this[value] || function() {
			return value.apply(null, [this].concat($A(arguments)));
		}
	}
}

Element.Methods = {
	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);
	},

	replace: function(element, html) {
		element = $(element);
		if (element.outerHTML) {
			element.outerHTML = html.stripScripts();
		} else {
			var range = element.ownerDocument.createRange();
			range.selectNodeContents(element);
			element.parentNode.replaceChild(
				range.createContextualFragment(html.stripScripts()), element);
		}
		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 $(element).innerHTML.match(/^\s*$/);
	},

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

	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 (var 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;
	}
}

Object.extend(Element, Element.Methods);

var _nativeExtensions = false;

if(!HTMLElement && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
	var HTMLElement = {}
	HTMLElement.prototype = document.createElement('div').__proto__;
}

Element.addMethods = function(methods) {
	Object.extend(Element.Methods, methods || {});

	if(typeof HTMLElement != 'undefined') {
		var methods = Element.Methods, cache = Element.extend.cache;
		for (property in methods) {
			var value = methods[property];
			if (typeof value == 'function')
				HTMLElement.prototype[property] = cache.findOrStore(value);
		}
		_nativeExtensions = true;
	}
}

Element.addMethods();

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) {
				var tagName = this.element.tagName.toLowerCase();
				if (tagName == 'tbody' || tagName == '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 Selector = Class.create();
Selector.prototype = {
	initialize: function(expression) {
		this.params = {classNames: []};
		this.expression = expression.toString().strip();
		this.parseExpression();
		this.compileMatcher();
	},

	parseExpression: function() {
		function abort(message) { throw 'Parse error in selector: ' + message; }

		if (this.expression == '')	abort('empty expression');

		var params = this.params, expr = this.expression, match, modifier, clause, rest;
		while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
			params.attributes = params.attributes || [];
			params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
			expr = match[1];
		}

		if (expr == '*') return this.params.wildcard = true;

		while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
			modifier = match[1], clause = match[2], rest = match[3];
			switch (modifier) {
				case '#':			 params.id = clause; break;
				case '.':			 params.classNames.push(clause); break;
				case '':
				case undefined: params.tagName = clause.toUpperCase(); break;
				default:				abort(expr.inspect());
			}
			expr = rest;
		}

		if (expr.length > 0) abort(expr.inspect());
	},

	buildMatchExpression: function() {
		var params = this.params, conditions = [], clause;

		if (params.wildcard)
			conditions.push('true');
		if (clause = params.id)
			conditions.push('element.id == ' + clause.inspect());
		if (clause = params.tagName)
			conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
		if ((clause = params.classNames).length > 0)
			for (var i = 0; i < clause.length; i++)
				conditions.push('Element.hasClassName(element, ' + clause[i].inspect() + ')');
		if (clause = params.attributes) {
			clause.each(function(attribute) {
				var value = 'element.getAttribute(' + attribute.name.inspect() + ')';
				var splitValueBy = function(delimiter) {
					return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
				}

				switch (attribute.operator) {
					case '=':			 conditions.push(value + ' == ' + attribute.value.inspect()); break;
					case '~=':			conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
					case '|=':			conditions.push(
														splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
													); break;
					case '!=':			conditions.push(value + ' != ' + attribute.value.inspect()); break;
					case '':
					case undefined: conditions.push(value + ' != null'); break;
					default:				throw 'Unknown operator ' + attribute.operator + ' in selector';
				}
			});
		}

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

	compileMatcher: function() {
		this.match = new Function('element', 'if (!element.tagName) return false; \
			return ' + this.buildMatchExpression());
	},

	findElements: function(scope) {
		var element;

		if (element = $(this.params.id))
			if (this.match(element))
				if (!scope || Element.childOf(element, scope))
					return [element];

		scope = (scope || document).getElementsByTagName(this.params.tagName || '*');

		var results = [];
		for (var i = 0; i < scope.length; i++)
			if (this.match(element = scope[i]))
				results.push(Element.extend(element));

		return results;
	},

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

function $$() {
	return $A(arguments).map(function(expression) {
		return expression.strip().split(/\s+/).inject([null], function(results, expr) {
			var selector = new Selector(expr);
			return results.map(selector.findElements.bind(selector)).flatten();
		});
	}).flatten();
}
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 (var 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 || opt.text;
		}
		return [element.name, value];
	},

	selectMany: function(element) {
		var value = [];
		for (var i = 0; i < element.length; i++) {
			var opt = element.options[i];
			if (opt.selected)
				value.push(opt.value || opt.text);
		}
		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) {
			try {
				element.detachEvent('on' + name, observer);
			} catch (e) {}
		}
	}
});

/* prevent memory leaks in IE */
if (navigator.appVersion.match(/\bMSIE\b/))
	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];
	}
}

function akst_share(id, url, title) {
	var form = $('akst_form');
	var post_id = $('akst_post_id');
	
	if (form.style.display == 'block' && post_id.value == id) {
		form.style.display = 'none';
		return;
	}
	
	var link = $('akst_link_' + id);
	var offset = Position.cumulativeOffset(link);

	$("akst_delicious").href = akst_share_url("http://del.icio.us/post?url={url}&title={title}", url, title);
	$("akst_digg").href = akst_share_url("http://digg.com/submit?phase=2&url={url}&title={title}", url, title);
	$("akst_furl").href = akst_share_url("http://furl.net/storeIt.jsp?u={url}&t={title}", url, title);
	$("akst_netscape").href = akst_share_url(" http://www.netscape.com/submit/?U={url}&T={title}", url, title);
	$("akst_yahoo_myweb").href = akst_share_url("http://myweb2.search.yahoo.com/myresults/bookmarklet?u={url}&t={title}", url, title);
	$("akst_technorati").href = akst_share_url("http://www.technorati.com/faves?add={url}", url, title);
	$("akst_google_bmarks").href = akst_share_url("  http://www.google.com/bookmarks/mark?op=edit&bkmk={url}&title={title}", url, title);
	$("akst_newsvine").href = akst_share_url("http://www.newsvine.com/_wine/save?u={url}&h={title}", url, title);
	$("akst_blinklist").href = akst_share_url("http://blinklist.com/index.php?Action=Blink/addblink.php&Url={url}&Title={title}", url, title);
	$("akst_reddit").href = akst_share_url("http://reddit.com/submit?url={url}&title={title}", url, title);
	$("akst_blogmarks").href = akst_share_url("http://blogmarks.net/my/new.php?mini=1&url={url}&title={title}", url, title);
	$("akst_magnolia").href = akst_share_url("http://ma.gnolia.com/bookmarklet/add?url={url}&title={title}", url, title);
	$("akst_windows_live").href = akst_share_url("https://favorites.live.com/quickadd.aspx?marklet=1&mkt=en-us&url={url}&title={title}&top=1", url, title);
	$("akst_tailrank").href = akst_share_url("http://tailrank.com/share/?link_href={url}&title={title}", url, title);

	post_id.value = id;

	form.style.left = offset[0] + 'px';
	form.style.top = (offset[1] + link.offsetHeight + 3) + 'px';
	form.style.display = 'block';
}

function akst_share_url(base, url, title) {
	base = base.replace('{url}', url);
	return base.replace('{title}', title);
}

function akst_share_tab(tab) {
	var tab1 = document.getElementById('akst_tab1');
	var tab2 = document.getElementById('akst_tab2');
	var body1 = document.getElementById('akst_social');
	var body2 = document.getElementById('akst_email');
	
	switch (tab) {
		case '1':
			tab2.className = '';
			tab1.className = 'selected';
			body2.style.display = 'none';
			body1.style.display = 'block';
			break;
		case '2':
			tab1.className = '';
			tab2.className = 'selected';
			body1.style.display = 'none';
			body2.style.display = 'block';
			break;
	}
}

function akst_xy(id) {
	var element = $(id);
	var x = 0;
	var y = 0;
}
/*
=================================================================

=================================================================
*/

/*
 * This is the function that actually highlights a text string by
 * adding HTML tags before and after all occurrences of the search
 * term. You can pass your own tags if you'd like, or if the
 * highlightStartTag or highlightEndTag parameters are omitted or
 * are empty strings then the default <font> tags will be used.
 */
function doHighlight(bodyText, searchTerm, highlightStartTag, highlightEndTag) 
{
  // the highlightStartTag and highlightEndTag parameters are optional
  if ((!highlightStartTag) || (!highlightEndTag)) {
    highlightStartTag = "<font style='color:blue; background-color:yellow;'>";
    highlightEndTag = "</font>";
  }
  
  // find all occurences of the search term in the given text,
  // and add some "highlight" tags to them (we're not using a
  // regular expression search, because we want to filter out
  // matches that occur within HTML tags and script blocks, so
  // we have to do a little extra validation)
  var newText = "";
  var i = -1;
  var lcSearchTerm = searchTerm.toLowerCase();
  var lcBodyText = bodyText.toLowerCase();
    
  while (bodyText.length > 0) {
    i = lcBodyText.indexOf(lcSearchTerm, i+1);
    if (i < 0) {
      newText += bodyText;
      bodyText = "";
    } else {
      // skip anything inside an HTML tag
      if (bodyText.lastIndexOf(">", i) >= bodyText.lastIndexOf("<", i)) {
        // skip anything inside a <script> block
        if (lcBodyText.lastIndexOf("/script>", i) >= lcBodyText.lastIndexOf("<script", i)) {
          newText += bodyText.substring(0, i) + highlightStartTag + bodyText.substr(i, searchTerm.length) + highlightEndTag;
          bodyText = bodyText.substr(i + searchTerm.length);
          lcBodyText = bodyText.toLowerCase();
          i = -1;
        }
      }
    }
  }
  
  return newText;
}


/*
 * This is sort of a wrapper function to the doHighlight function.
 * It takes the searchText that you pass, optionally splits it into
 * separate words, and transforms the text on the current web page.
 * Only the "searchText" parameter is required; all other parameters
 * are optional and can be omitted.
 */
function highlightSearchTerms(searchText, treatAsPhrase)
{
  // if the treatAsPhrase parameter is true, then we should search for 
  // the entire phrase that was entered; otherwise, we will split the
  // search string so that each word is searched for and highlighted
  // individually
  if (treatAsPhrase) {
    searchArray = [searchText];
  } else {
    searchArray = searchText.split(" ");
  }
  
  if (!document.body || typeof(document.body.innerHTML) == "undefined") {    
    return false;
  }
  
  var bodyText = document.body.innerHTML;
  for (var i = 0; i < searchArray.length; i++) {
    bodyText = doHighlight(bodyText, searchArray[i],"<span class='highlight'>","</span>");
  }
  
  document.body.innerHTML = bodyText;
  return true;
}

function ClickCounter(url){
	if(document.images){
		var a=window.encodeURIComponent?encodeURIComponent:escape,e="";
		e="url="+a(url.replace(/#.*/,""));//.replace(/\+/g,"%2B");
		(new Image).src="/clickcounter.php?"+e;
	}
	return true
};