//====================================================================//
// Wait until the window is loaded before registering events.
//====================================================================//
Event.observe(window, 'load', function(event) {

  // IE Mouseover Hack.
	// Only execute if the browser is an older version of IE.
	if (!window.XMLHttpRequest) {
		// add an over classname to dropdown menus on mouseover.
		// Standards based browsers do not need this.
        $$('li.drop_menu').each( function(e) {
       	  	Event.observe(e, 'mouseover', function() {
           	  	Element.addClassName(e, 'over');
           	});
           	Event.observe(e, 'mouseout', function() {
               	Element.removeClassName(e, 'over');
            });
        });
	}
});