Roy Tang

Say I add events to an object using either addEventListener or attachEvent (depending on the browser); is it possible to later invoke those events programmatically?

The events handlers are added/removed using an object like this:

var Event = {
    add: function(obj,type,fn) {
        if (obj.attachEvent) {
            obj.attachEvent('on'+type,fn);
        } else {
            obj.addEventListener(type,fn,false);
        }
    },
    remove: function(obj,type,fn) {
        if (obj.detachEvent) {
            obj.detachEvent('on'+type,fn);
        } else {
            obj.removeEventListener(type,fn,false);
        }
    }
}

Or do I need to store copies of each handler and just add an Event.invoke(…) function?

Edit: Also, jQuery is not an option :D