function menuhide(menunum) {
		var currentmenu = document.getElementById("submenu" + menunum);
		currentmenu.style.visibility = 'hidden';
//		currentmenu.parentNode.className = '';
	}
	function menushow(menunum) {
		var currentmenu = document.getElementById("submenu" + menunum);
		currentmenu.style.visibility = 'visible';
//		currentmenu.parentNode.className = 'selected';
	}