/**
 * @projectDescription Empas Prototye & UI
 * @copyright Empas Corp. <http://www.empas.com>
 * @author ifsnow ifsnow@empascorp.com
 * @version 1.0
 * 
 * Empas > Core > Prototype
 *
 * base : prototype.js v1.5.1.1
 */

var Prototype = {
	Version: '1.5.1.1',

	Browser: {
		IE: !!(window.attachEvent && !window.opera),
		Opera: !!window.opera,
		WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
		Gecko: navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1
	},

	BrowserFeatures: {
		XPath: !!document.evaluate,
		ElementExtensions: !!window.HTMLElement,
		SpecificElementExtensions:
			(document.createElement('div').__proto__ !== document.createElement('form').__proto__)
	},

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

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

function $T(element) {
	return typeof element;
};

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

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

Object.extend(Object, {
	toJSON: function(object) {
		var type = $T(object);
		switch(type) {
			case 'undefined':
			case 'function':
			case 'unknown': return;
			case 'boolean': return object.toString();
		}
		if (object === null) return 'null';
		if (object.toJSON) return object.toJSON();
		if (object.ownerDocument === document) return;
		var results = [];
		for (var property in object) {
			var value = Object.toJSON(object[property]);
			if (value !== undefined)
				results.push(property.toJSON() + ': ' + value);
		}
		return '{' + results.join(', ') + '}';
	},
	
	clone: function(object) {
		return Object.extend({}, object);
	}
});

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, args = $A(arguments), object = args.shift();
	return function(event) {
		return __method.apply(object, [event || window.event].concat(args));
	}
};

Object.extend(Number.prototype, {
	toJSON: function() {
		return isFinite(this) ? this.toString() : 'null';
	}
});

Date.prototype.toJSON = function() {
	return '"' + this.getFullYear() + '-' +
		(this.getMonth() + 1).toPaddedString(2) + '-' +
		this.getDate().toPaddedString(2) + 'T' +
		this.getHours().toPaddedString(2) + ':' +
		this.getMinutes().toPaddedString(2) + ':' +
		this.getSeconds().toPaddedString(2) + '"';
};

//--------------------------------------------------------------------------
// PeriodicalExecuter
//--------------------------------------------------------------------------

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

		this.registerCallback();
	},

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

	stop: function() {
		if (!this.timer) return;
		clearInterval(this.timer);
		this.timer = null;
	},
	
	onTimerEvent: function() {
		if (!this.currentlyExecuting) {
			try {
				this.currentlyExecuting = true;
				this.callback(this);
			} finally {
				this.currentlyExecuting = false;
			}
		}
	}
};

//--------------------------------------------------------------------------
// String
//--------------------------------------------------------------------------

Object.extend(String, {
	interpret: function(value) {
		return value == null ? '' : String(value);
	},
	
	specialChar: {
		'\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '\\': '\\\\' 
	}
});

Object.extend(String.prototype, {
	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 += String.interpret(replacement(match));
				source  = source.slice(match.index + match[0].length);
			} else {
				result += source;
				source = '';
			}
		}
	
		return result;
	},

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

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

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

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

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

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

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

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

		return camelized;
	},

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

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

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

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

	evalJSON: function(sanitize) {
		var json = this.unfilterJSON();

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

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

	empty: function() {
		return this == '';
	},
	
	bytes: function() {
	    var l = 0;
		
		var len = this.length;
    	for(var i=0;i<len;i++)
        	l += this.charCodeAt(i)>128 ? 2:1;
			
		return l;
	}
});

String.prototype.gsub.prepareReplacement = function(replacement) {
	if ($T(replacement) == 'function') return replacement;
	var template = new Template(replacement);
	return function(match) { return template.evaluate(match) };
};

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 + String.interpret(object[match[3]]);
		});
	}
};

//--------------------------------------------------------------------------
// Enumerable
//--------------------------------------------------------------------------

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

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

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

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

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

Object.extend(Enumerable, {
	select:  Enumerable.findAll
});

//--------------------------------------------------------------------------
// Array
//--------------------------------------------------------------------------

Array.from = function(iterable) {
	if (!iterable) return [];
	if (iterable.toArray) {
		return iterable.toArray();
	} else {
		var results = [];
		for (var i = 0, length = iterable.length; i < length; i++)
			results.push(iterable[i]);
		return results;
	}
};

var $A = Array.from;

if (Prototype.Browser.WebKit) {
	$A = Array.from = function(iterable) {
		if (!iterable) return [];
		if (!($T(iterable) == 'function' && iterable == '[object NodeList]') &&
			iterable.toArray) {
			return iterable.toArray();
		} else {
			var results = [];
			for (var i = 0, length = iterable.length; i < 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, length = this.length; i < 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 != null;
		});
	},

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

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

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

	size: function() {
		return this.length;
	},

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

Array.prototype.toArray = Array.prototype.clone;

if (Prototype.Browser.Opera){
	Array.prototype.concat = function() {
		var array = [];
		for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
		for (var i = 0, length = arguments.length; i < length; i++) {
			if (arguments[i].constructor == Array) {
				for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
					array.push(arguments[i][j]);
			} else {
				array.push(arguments[i]);
			}
		}
		return array;
	};
};

//--------------------------------------------------------------------------
// Hash
//--------------------------------------------------------------------------

var Hash = function(object) {
	if (object instanceof Hash) this.merge(object);
	else Object.extend(this, object || {});
};

Object.extend(Hash, {
	toQueryString: function(obj) {
		var parts = [];
		parts.add = arguments.callee.addPair;

		this.prototype._each.call(obj, function(pair) {
			if (!pair.key) return;
			
			var value = pair.value;

			if (value && $T(value) == 'object') { 
				if (value.constructor == Array) value.each(function(value) {
					parts.add(pair.key, value);
				});
				
				return;
			}
	  
			parts.add(pair.key, value);
		});

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

	toJSON: function(object) {
		var results = [];
		this.prototype._each.call(object, function(pair) {
			var value = Object.toJSON(pair.value);
			if (value !== undefined) results.push(pair.key.toJSON() + ': ' + value);
		});
		
		return '{' + results.join(', ') + '}';
	}
});

Hash.toQueryString.addPair = function(key, value, prefix) {
	key = encodeURIComponent(key);
	if (value === undefined) this.push(key);
	else this.push(key + '=' + (value == null ? '' : encodeURIComponent(value)));
};

Object.extend(Hash.prototype, Enumerable);
Object.extend(Hash.prototype, {
	_each: function(iterator) {
		for (var key in this) {
			var value = this[key];
			if (value && value == Hash.prototype[key]) continue;

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

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

	toQueryString: function() {
		return Hash.toQueryString(this);
	},

	toJSON: function() {
		return Hash.toJSON(this);
	}
});

function $H(object) {
	if (object instanceof Hash) return object;
	return new Hash(object);
};

// Safari iterates over shadowed properties
if (function() {
	var i = 0, Test = function(value) { this.key = value };
	Test.prototype.key = 'foo';
	for (var property in new Test('bar')) i++;
	return i > 1;
}()) Hash.prototype._each = function(iterator) {
	var cache = [];
	for (var key in this) {
		var value = this[key];
		if ((value && value == Hash.prototype[key]) || cache.include(key)) continue;
		cache.push(key);
		var pair = [key, value];
		pair.key = key;
		pair.value = value;
		iterator(pair);
	}
};

//--------------------------------------------------------------------------
// Element
//--------------------------------------------------------------------------

function $(element) {
	if (arguments.length > 1) {
		for (var i = 0, elements = [], length = arguments.length; i < length; i++)
			elements.push($(arguments[i]));
		return elements;
	}
	
	if ($T(element) == 'string') 
		element = document.getElementById(element);
	
	return Element.extend(element);
};

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

	document.getElementsByClassName = function(className, parentElement) {
		var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
		return document._getElementsByXPath(q, parentElement);
	};
} else document.getElementsByClassName = function(className, parentElement) {
	var children = ($(parentElement) || document.body).getElementsByTagName('*');
	var elements = [], child, pattern = new RegExp("(^|\\s)" + className + "(\\s|$)");

	for (var i = 0, length = children.length; i < length; i++) {
		child = children[i];
		var elementClassName = child.className;
		if (elementClassName.length == 0) continue;
		if (elementClassName == className || elementClassName.match(pattern))
		elements.push(Element.extend(child));
	}

	return elements;
};

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

Element.extend = function(element) {
	var F = Prototype.BrowserFeatures;
	
	if (!element || !element.tagName || element.nodeType == 3 ||
		element._extended || F.SpecificElementExtensions || element == window)
		return element;

	var methods = {}, tagName = element.tagName, cache = Element.extend.cache,
	T = Element.Methods.ByTag;

	// extend methods for all tags (Safari doesn't need this)
	if (!F.ElementExtensions) {		
		Object.extend(methods, Element.Methods);
		Object.extend(methods, Element.Methods.Simulated);
	}

	// extend methods for specific tags
	if (T[tagName]) Object.extend(methods, T[tagName]);

	for (var property in methods) {
		var value = methods[property];
		if ($T(value) == 'function' && !(property in element))
			element[property] = cache.findOrStore(value);
	}

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

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

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

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

	update: function(element, html) {
		html = $T(html) == 'undefined' ? '' : html.toString();
	    $(element).innerHTML = html.stripScripts();
		setTimeout(function() {html.evalScripts()}, 10);
	    return element;
	},

	getElementsByClassName: function(element, className) {
		return document.getElementsByClassName(className, element);
	},
	
	getHeight: function(element) {
		return $(element).getDimensions().height;
	},

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

	classNames: function(element) {
		return new Element.ClassNames(element);
	},
	
	getDimensions: function(element) {
		element = $(element);
		var display = $(element).getStyle('display');
		// Safari bug
		if (display != 'none' && display != null) 
			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;
		var originalDisplay = els.display;
		els.visibility = 'hidden';
		els.position = 'absolute';
		els.display = 'block';
		var originalWidth = element.clientWidth;
		var originalHeight = element.clientHeight;
		els.display = originalDisplay;
		els.position = originalPosition;
		els.visibility = originalVisibility;
		
		return {width: originalWidth, height: originalHeight};
	},
	
	makePositioned: function(element) {
		element = $(element);
		var pos = Element.getStyle(element, 'position');
		if (pos == 'static' || !pos) {
			element._madePositioned = true;
			element.style.position = 'relative';
			// 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;
			}
		}
		
		return element;
	},

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

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

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

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

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

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

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

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

		for (var property in styles)
			if (property == 'opacity')
				element.setOpacity(styles[property]);
			else
				elementStyle[(property == 'float' || property == 'cssFloat') ?
					(elementStyle.styleFloat === undefined ? 'cssFloat' : 'styleFloat') :
					(camelized ? property : property.camelize())] = styles[property];
		return element;
	},

	setOpacity: function(element, value) {
		element = $(element);
		element.style.opacity = (value == 1 || value === '') ? '' : (value < 0.00001) ? 0 : value;
		return element;
	},
	
	observe: function() {
		Event.observe.apply(Event, arguments);
		return $A(arguments).first();
	},
	
	stopObserving: function() {
		Event.stopObserving.apply(Event, arguments);
		return $A(arguments).first();
	},

	// removes whitespace-only text node children
	cleanWhitespace: function(element) {
		element = $(element);
		var node = element.firstChild;
		while (node) {
			var nextNode = node.nextSibling;
			if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
				element.removeChild(node);
			node = nextNode;
		}
		return element;
	},
  
	readAttribute: function(element, name) {
		element = $(element);
		if (Prototype.Browser.IE) {
			if (!element.attributes) return null;
			var t = Element._attributeTranslations;
			if (t.values[name]) return t.values[name](element, name);
			if (t.names[name])  name = t.names[name];
			var attribute = element.attributes[name];
			return attribute ? attribute.nodeValue : null;
		}
		return element.getAttribute(name);
	}
};

if (Prototype.Browser.Opera) {
	Element.Methods._getStyle = Element.Methods.getStyle;
	Element.Methods.getStyle = function(element, style) {
		switch(style) {
			case 'left':
			case 'top':
			case 'right':
			case 'bottom':
				if (Element._getStyle(element, 'position') == 'static') return null;
			default: return Element._getStyle(element, style);
		}
	};
}
else if (Prototype.Browser.IE) {
	Element.Methods.getStyle = function(element, style) {
		element = $(element);
		style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
		var value = element.style[style];
		if (!value && element.currentStyle) value = element.currentStyle[style];

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

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

	Element.Methods.setOpacity = function(element, value) {
		element = $(element);
		var filter = element.getStyle('filter'), style = element.style;
		if (value == 1 || value === '') {
			style.filter = filter.replace(/alpha\([^\)]*\)/gi,'');
			return element;
		} else if (value < 0.00001) value = 0;
			style.filter = filter.replace(/alpha\([^\)]*\)/gi, '') + 
				'alpha(opacity=' + (value * 100) + ')';
			return element;
	};
}
else if (Prototype.Browser.Gecko) {
	Element.Methods.setOpacity = function(element, value) {
		element = $(element);
		element.style.opacity = (value == 1) ? 0.999999 :
			(value === '') ? '' : (value < 0.00001) ? 0 : value;
		return element;
	};
};

Element._attributeTranslations = {
	names: {
		colspan:   "colSpan",
		rowspan:   "rowSpan",
		valign:    "vAlign",
		datetime:  "dateTime",
		accesskey: "accessKey",
		tabindex:  "tabIndex",
		enctype:   "encType",
		maxlength: "maxLength",
		readonly:  "readOnly",
		longdesc:  "longDesc"
	},
	values: {
		_getAttr: function(element, attribute) {
				return element.getAttribute(attribute, 2);
		},
		_flag: function(element, attribute) {
			return $(element).hasAttribute(attribute) ? attribute : null;
		},
		style: function(element) {
			return element.style.cssText.toLowerCase();
		},
		title: function(element) {
			var node = element.getAttributeNode('title');
			return node.specified ? node.nodeValue : null;
		}
	}
};

(function() {
	Object.extend(this, {
		href: this._getAttr,
		src:  this._getAttr,
		type: this._getAttr,
		disabled: this._flag,
		checked:  this._flag,
		readonly: this._flag,
		multiple: this._flag
	});
}).call(Element._attributeTranslations.values);

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

Element.Methods.ByTag = {};

Object.extend(Element, Element.Methods);

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

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

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

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

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

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

	function copy(methods, destination, onlyIfAbsent) {
		onlyIfAbsent = onlyIfAbsent || false;
		var cache = Element.extend.cache;
		for (var property in methods) {
			var value = methods[property];
			if (!onlyIfAbsent || !(property in destination))
				destination[property] = cache.findOrStore(value);
		}
	}

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

		window[klass] = {};
		window[klass].prototype = document.createElement(tagName).__proto__;
		
		return window[klass];
	}

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

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

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

Element.addMethods();

//--------------------------------------------------------------------------
// Element > ClassNames
//--------------------------------------------------------------------------

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

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

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

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

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

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

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

//--------------------------------------------------------------------------
// Event
//--------------------------------------------------------------------------

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,
	KEY_HOME:     36,
	KEY_END:      35,
	KEY_PAGEUP:   33,
	KEY_PAGEDOWN: 34,

	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;
		}
	},

	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, length = Event.observers.length; i < length; i++) {
			Event.stopObserving.apply(this, Event.observers[i]);
			Event.observers[i][0] = null;
		}
		Event.observers = false;
	},

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

		if (name == 'keypress' && (Prototype.Browser.WebKit || element.attachEvent))
			name = 'keydown';

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

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

		if (name == 'keypress' && (Prototype.Browser.WebKit || element.attachEvent))
			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 (Prototype.Browser.IE)
{
	Event.observe(window, 'unload', Event.unloadCache, false);	
}

//--------------------------------------------------------------------------
// Position
//--------------------------------------------------------------------------	

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) {
				if(element.tagName=='BODY') break;
				var 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;
	},

	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 {
			if (!window.opera || element.tagName=='BODY') {
				valueT -= element.scrollTop  || 0;
				valueL -= element.scrollLeft || 0;
			}
		} while (element = element.parentNode);

		return [valueL, valueT];
	},

	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;
	},
	
	getWindowSize: function(w) {
		w = w ? w : window;
		var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
		var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
		return { width: width, height: height };
	},

	center: function(element){
		var options = Object.extend({
			zIndex: 9999,
			update: false
		}, arguments[1] || {});

		element = $(element);

		if(!element._centered){
			Element.setStyle(element, {position: 'absolute', zIndex: options.zIndex });
			element._centered = true;
		}

		var dims = Element.getDimensions(element);

		Position.prepare();
		var winSize = Position.getWindowSize();
		var winWidth = winSize.width;
		var winHeight = winSize.height;

		var offLeft = (Position.deltaX + Math.floor((winWidth-dims.width)/2));
		var offTop = (Position.deltaY + Math.floor((winHeight-dims.height)/2));

		element.style.top = ((offTop != null && offTop > 0) ? offTop : '0')+ 'px';
		element.style.left = ((offLeft != null && offLeft > 0) ? offLeft :'0') + 'px';

		if (options.update) {
			Event.observe(window, 'resize', function(evt) { Position.center(element); }, false);
			Event.observe(window, 'scroll', function(evt) { Position.center(element); }, false);
		}
	}
};

// 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 (Prototype.Browser.WebKit) {
	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];
	}
}

//--------------------------------------------------------------------------
// Add Functions By ifsnow
//--------------------------------------------------------------------------	

// IE 6,7 check
if (Prototype.Browser.IE)
{
	Prototype.Browser[window.XMLHttpRequest ? 'IE7' : 'IE6'] = true;
	
	// enables background image cache for internet explorer 6
	if (Prototype.Browser.IE6)
	{
		try {document.execCommand("BackgroundImageCache", false, true);} catch(e){}
	}	
}

function $C(tag) {
	return $(document.createElement(tag));
}

function $F(element) {
	return $(element).value;	
}

function $D(element) {
	return (typeof element=="undefined" || element==null) ? false:true;
}

function $B(val) {
	return val=="true" ? true: val=="false" ? false:val;
}

function $ATTR(element, name) {
	var attr = $(element).readAttribute(name);

	// IE일 경우 예약된 속성은 속성명은 반환
	if (attr==name) return true;
	
	if (!Prototype.Browser.IE && attr!=null && attr.empty())
		return true;
	
	// 속성이 없는 경우
	if (attr==null || ($T(attr)=="string" && attr.empty())) return false;	

	return $B(attr);
}

function $LOADJS(file) {
	var script = document.createElement("script");
	script.type = "text/javascript";
	script.src = file;
	document.getElementsByTagName('head')[0].appendChild(script); 
}

function $FLASH(file, options) {
	options = Object.extend({
		id: '',
		width: '100%',
		height: '100%',
		access: 'sameDomain'
	}, options || {});
	
	var id ='id="'+ options.id +'" name="'+ options.id +'"';
	
	if (Prototype.Browser.IE)
    {
		var html = '<object ' + id + ' type="application/x-shockwave-flash" classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" ';
		html += 'width="' + options.width + '" height="' + options.height + '">';
		html += '<param name="movie" value="' + file + '" />';
		html += '<param name="quality" value="high" />';
		html += '<param name="wmode" value="transparent" />';
		html += '<param name="allowScriptAccess" value="' + options.access + '" />';
		html += '</object>';
	}
	else
	{
		var html = '<embed '+ id + ' src="' + file +'" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" ';
		html += ' width="' + options.width + '" height="' + options.height + '" ';
		html += ' allowScriptAccess="' + options.access + '"> </embed>';
	}

	document.write(html);
}

function $PRIVACY() {
	document.oncontextmenu = new Function ("return false");
	document.ondragstart = new Function ("return false");
	document.onselectstart = new Function ("return false");
}

function $ONDOMLOAD(func) {
	Prototype.onDomLoadFunc = func;
	
	if (Prototype.Browser.Gecko || Prototype.Browser.Opera)	{
		Event.observe(window, "DOMContentLoaded", $ONDOMLOAD_FUNCTION);
	} else if (Prototype.Browser.IE) {
		document.write("<scr" + "ipt id=__ie_init defer=true " + "src=//:><\/script>");	
		var script = $("__ie_init");		
		
		if ( script ) {
			script.onreadystatechange = function() {
				if ( this.readyState != "complete" ) return;
				$ONDOMLOAD_FUNCTION();
			};
		}
				
		script = null;
	} else if (Prototype.Browser.WebKit) {
		new PeriodicalExecuter(function(pe){
			// loaded and complete are both valid states
			if ( document.readyState == "loaded" || 
				document.readyState == "complete" ) {				
				pe.stop();	
				$ONDOMLOAD_FUNCTION();
			}
		}, 0.01); 
	}
}

function $ONDOMLOAD_FUNCTION() {
	if ($D(Prototype.onDomLoadFunc)) {
		Prototype.onDomLoadFunc();
		Prototype.onDomLoadFunc = null;

		if (Prototype.Browser.Gecko || Prototype.Browser.Opera)	{
			Event.stopObserving(document, "DOMContentLoaded", $ONDOMLOAD_FUNCTION);
		}
	}
}