window.addEvent('load', function() { 
	initilizeDD();
	var mySmoothScroll = new SmoothScroll();
});

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

}