/**
 *  @source http://bobobobo.wordpress.com/2008/05/22/the-stupidly-brief/
 *  @target Display the background image once the dom is loaded
 */

Event.observe( window, 'load', function() {

    var background = new Element( 'img' );
    background.id = 'background';
    background.src = './images/background.jpg';
    Element.insert( $('body'), { 'top': background } );
    
});