jquery.pubsub.js

(function($){

$.pubsub = (function(){
	var mule = $({});
	return {
		subscribe:function(key, fn){
			//Normalise
			mule.bind(key, function(e, data){
				fn.apply(null, [data]);
			});
		},
		publish:function(key, data){
			mule.trigger(key, data);
		},
		unsubscribe:function(key){
			mule.unbind(key);
		}
	};	
}());

})(jQuery);