quick pub/sub with jQuery

jqPubSub.js

/**
 * Create an observer pattern for jQuery
 * allows you to alias trigger with publish,
 * on with subscribe,
 * and off with unsubcsribe
 * Useful for custom events
 *
 *USAGE:
 * $(el).subscribe('customEvent', function() {
 *       do something when customEvent is published
 *
 *       No longer need to subscribe to custom event
 *       $(el).unsubscribe('customEvent');
 * });
 *
 * Custom event is fired
 * $.publish('customEvent');
 */
(function($) {
	var o = $({});
	$.each({
		trigger: 'publish',
		on: 'subscribe',
		off: 'unsubscribe'
	}, function(key, val){
		jQuery[val] = function() {
			o[key].apply(o, arguments);
		}
	});
})(jQuery);