document.observe('dom:loaded', function() {	$$('#main-navi LI UL').each(function(elm) {		elm.hide();	});		$$('#main-navi > UL > LI').each(function(elm) {		var submenu = $(elm).select('UL')[0];				if (submenu != undefined)		{			elm.observe('mouseover', function() {				submenu.show();			});						elm.observe('mouseout', function() {				submenu.hide();			});		}	});});