window.addEvent('domready', function(){
	if($('drop_down_menu')){
		$('drop_down_menu').getElements('li.menu').each( function( elem ){
			var list = elem.getElement('ul.links');
			if(list) {
				var myFx = new Fx.Slide(list).hide();
				elem.addEvents({
					'mouseenter' : function(){
						myFx.cancel();
						myFx.slideIn();
					},
					'mouseleave' : function(){
						myFx.cancel();
						myFx.slideOut();					
					}
				});
			}
		});
	}
});