function Event(name){
	  this.name = name;
	  this.callbacks = [];
	}
	Event.prototype.registerCallback = function(callback){
	  this.callbacks.push(callback);
	}

	function Reactor(){
	  this.events = {};
	}

	Reactor.prototype.registerEvent = function(eventName){
	  var event = new Event(eventName);
	  this.events[eventName] = event;
	};

	Reactor.prototype.dispatchEvent = function(eventName, eventArgs){
	  this.events[eventName].callbacks.forEach(function(callback){
	    callback(eventArgs);
	  });
	};

	Reactor.prototype.addEventListener = function(eventName, callback){
	  this.events[eventName].registerCallback(callback);
	};

	var reactor = new Reactor();

	reactor.registerEvent('big bang');

	reactor.addEventListener('big bang', function(){
	  console.log('This is big bang listener yo!');
	});

	reactor.addEventListener('big bang', function(){
	  console.log('This is another big bang listener yo!');
	});

	reactor.dispatchEvent('big bang');