This little wrapper creates a Mock Event object to be used with fire event.
The simplest use case is this:
#JS
$('el').fireEvent('click',new Event.Mock);
If you want, you can set a target for the event:
#JS
var ev = new Event.Mock($('el-target'));
$('el').fireEvent('click',ev);
And lastly, you can specify an event type, though this will not be used on IE:
#JS
var ev = new Event.Mock($('el-target'),'mousedown');
$('el').fireEvent('click',ev);