AddEvent.js

// By Alan Edwardes - http://alanedwardes.com/contact
// Licensed under The GNU General Public License (GPL)
// -------------------------------------------------------------
// A simple events wrapper function for adding events that works
// cross browser, and allows you to use the first parameter of
// the callback function as a reference to the object that the 
// event was fired from, which replaces IE's lack of support
// for the "this" variable.
//
// Ex. Usage:
// ------------------------------------------------------------------------
// AddEvent(document.GetElementById('SomeElement'),'mousedown',MyCallback);
//
// function MyCallback(Element){
//    alert('This is the content of my element: ' + Element.innerHTML);
// }

function AddEvent(Element,Event,Callback){
    if(window.addEventListener){
        Element.addEventListener(Event,function(){
            Callback(Element);
        },false);
    }else if(window.attachEvent){
        Element.attachEvent('on'+Event,function(){
            Callback(Element);
        });
    }
}