window.addEvent('domready', function(){
  $('galerie-menu').getElements('li.submenu').each( function( elem ){
    var list = elem.getElement('ul.level_2');
    var myFx = new Fx.Slide(list).hide();
    elem.addEvents({
			'mouseover' : function(){
				myFx.cancel();
				myFx.slideIn();
			}
		});
  })
});