Group

The Group class is for grouping Class or Element Events. The Event added to the Group will fire when all of the events of the items of the group are fired. Here are the docs for Group.js.

	xhr1 = new Request.HTML({url: '../../../../../../../wiki/_export/xhtml/mootorial/08-plugins/02-utilityplugins/data.js', evalScript: true});
	xhr2 = new Request.HTML({url: 'abstraction.js', evalScript: true});
	xhr3 = new Request.HTML({url: 'template.js', evalScript: true});
 
	var group = new Group(xhr1, xhr2, xhr3);
	group.addEvent('onComplete', function(){
		alert('All Scripts loaded');
	});
 
	xhr1.send();
	xhr2.send();
	xhr3.send();
	//when all 3 requests complete, the alert will occur

Using Group you can define custom events for your applications. When the user interacts with the page in a specific order, you can fire an event to signify this occurence.