register and trigger events by eventuality function

eventuality.js

var eventuality = function(that){
	var registry = {};

	that.on = function(type, method, parameters){
		var handler = {
			method : method,
			parameters : parameters
		};

		if(registry.hasOwnProperty(type)){
			registry[type].push(handler);
		}else{
			registry[type] = [handler];
		}
		return this;
	};

	that.trigger = function(event){
		var array,
		    func,
		    handler,
		    i,
		    type = typeof event === "string" ? event : event.type;

		if(registry.hasOwnProperty(type)){
			array = registry[type];
			for(i = 0; i < array.length; i++){
				handler = array[i];
				func = handler.method;
				if(typeof func === "string"){
					func = this[func];
				}
				func.apply(this, handler.parameters || [event]);
			}
		}
		return this;
	};
	
//	that.get_registry = function(){
//		return registry;
//	};

	return that;
};



//example
var obj = {};
eventuality(obj);


obj.on("click", function(){
	alert("clicked!!");
});

obj.on("touch", function(){
	alert("Don't touch me!!");
})

obj.trigger("click").trigger("touch");