function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}

function toggle(id, trigger) {	
	el = $(id);
	trig = $(trigger);
	if (hasClass(el, 'hide')) {
		rmClass(el, 'hide');
		rmClass(trig, 'collapse');
	} else {
		addClass(el, 'hide');
		addClass(trig, 'collapse');
	}
	return false;
}

function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}

/**
 * Tests if an element has a class style applied to it
 */
function hasClass(object, newClass) {
		
	if (!object.className) return false;
	
	return new RegExp('\\b'+newClass+'\\b').test(object.className);
	
}

/**
 * Adds a style class to an element
 */
function addClass(object, newClass) {
		
	if (!hasClass(object, newClass)) {
		object.className += ' ' + newClass;
	}
	
}

/**
 * Removes a style from a class element
 */
function rmClass(object, oldClass) {
		
	if (hasClass(object, oldClass)) {
		object.className = object.className.replace(new RegExp('\\s*\\b' + oldClass + '\\b'), '');
	}
	
}

var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();