function showMenu(element) {
	if (element.nodeName.toUpperCase() == 'LI') {
		actNode = element.firstChild;
		while (actNode != null) {
			if (actNode.nodeName.toUpperCase() == 'UL') {
				actNode.style.display = 'block';
			}
			actNode = actNode.nextSibling;
		}
	} else if (element.nodeName.toUpperCase() == 'UL') {
		element.style.display = 'block';
	}
}

function hideMenu(element) {
	if (element.nodeName.toUpperCase() == 'LI') {
		actNode = element.firstChild;
		while (actNode != null) {
			if (actNode.nodeName.toUpperCase() == 'UL') {
				actNode.style.display = 'none';
			}
			actNode = actNode.nextSibling;
		}
	} else if (element.nodeName.toUpperCase() == 'UL') {
		element.style.display = 'none';
	}
}