SOURCE

var a = (function(){
			var count = 0;
			var button = document.getElementById('count');
			console.log(Event)
			button.onclick = function(){
				Event.trigger('add',count++)
			}
		})()

		var b = (function(){
			var div = document.getElementById('show');
			console.log(Event)
			Event.listen('add',function(count){
				div.innerHTML = count;
			})

		})()