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];
	}
}

function removeEvent( obj, type, fn ) {
	EventCache.remove(obj, type, fn);
}

var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		remove : function(node, sEventName, fHandler){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1) {
				if(node == listEvents[i][0] && sEventName == listEvents[i][1] && fHandler == listEvents[i][2]) {
					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[0][sEventName+fHandler]);
					}
					item[0][item[1]] = null;
				}
			}
		},
		flush : function(){
			var i, item, eventtype;
			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]);
				};
				eventtype = item[1];
				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].detachEvent(item[1], item[0][eventtype+item[2]]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();
addEvent(window,'unload',EventCache.flush);