function Timer(){
	this.intVal = 500;
	this.interval = null;
	this.events = [];
	this.listeners = [];
	this.start();
}
Timer.prototype.start = function(){
	this.interval = window.setInterval(this.intFunc.bind(this), this.intVal);
}
Timer.prototype.intFunc = function(){
	this.events.each(
		function(ev, index){
			var ret = ev.func.call(ev);
			if(ret !== false){
				var lnrs = this.getListeners(ev.name);
				if(lnrs.length){
					lnrs.each(
						function(lnr){
							lnr.func.apply(lnr, [ret]);
						}
					)
				}
			}
		}.bind(this)
	);
}
Timer.prototype.getListeners = function(name){
	var lnrs = [];
	this.listeners.each(
		function(lnr){
			if(lnr.name == name){
				lnrs.push(lnr);
			}
		}
	);
	return lnrs;
}
Timer.prototype.registerEvent = function(ev){
	this.events.push(ev);
}
Timer.prototype.registerEventListener = function(lnr){
	this.listeners.push(lnr);
}
Timer.prototype.stop = function(){
	window.clearInterval(this.interval);
}