var _events = {};

function addEventListener(eventName, id, func){
	
	if(typeof(eventName) == "string"){
		eventName = [eventName];
	}
	
	for(event in eventName){
		if(typeof(_events[eventName[event]]) == "undefined"){
			_events[eventName[event]] = {};
		}
		_events[eventName[event]][id] = func;
	}

	
}



function removeEventListener(eventName, id){
	
	if(typeof(eventName) == "string") eventName = [eventName];
	
	for(event in eventName){
		if(typeof(_events[eventName[event]]) != "undefined" && typeof(_events[eventName[event]][id]) != "undefined")
			delete _events[eventName[event]][id];
	}

}



function createRandomId(){
	var length = Math.round(Math.random() * 5);
	if(length == 0)length = 3; 
	var str = "";
	var letters = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];

	for(var i=0;i<length;i++){
		str += letters[Math.round(Math.random() * 25)];
	} 
	return str;
}



/*
	call with
	
	triggerEvent(name[,arg1[,arg2[,arg3]]]);

*/
function triggerEvent(){
	var args = $A(arguments);
	var name = args.shift();

	if(typeof(_events[name]) != "undefined"){
		for(func in _events[name]){
			_events[name][func].apply(this, args);
		}
	}
}


function $A(item){
	var re = [];
	for(xxx in item){
		re.push(item[xxx]);
	}
	if(re.length == 0){
		for(var i=0;i<item.length;i++){
			re.push(item[i]);
		}
	}
	return re;
}