https://www.borderstates.com/_ui/shared/js/analyticsmediator.js

1window.mediator = (function() {
2	return {
3		trackers: {},
4		publish: function(tracker) {
5			if (!mediator.trackers[tracker]) {
6				return false;
7			}
8			var args = Array.prototype.slice.call(arguments, 1);
9			for (var i = 0, l = mediator.trackers[tracker].length; i < l; i++) {
10				var subscription = mediator.trackers[tracker][i];
11				subscription.callback.apply(subscription.context, args);
12			}
13			return this;
14		},
15		publishAll: function() {
16			if (Object.keys(mediator.trackers).length === 0) {
17				return false;
18			}
19			for (var tracker in mediator.trackers) {
20				if (mediator.trackers.hasOwnProperty(tracker)) {
21					var args = [tracker].concat(Array.prototype.slice.call(arguments));
22					mediator.publish.apply(this, args);
23				}
24			}
25			return this;
26		},
27		subscribe: function(tracker, fn) {
28			if (!mediator.trackers[tracker]) {
29				mediator.trackers[tracker] = [];
30			}
31			mediator.trackers[tracker].push({context: this, callback: fn});
32			return this;
33		}
34	};
35})();