function showMenu(el) {
	for (var i = 0; i < el.firstChild.childNodes.length; i++) {
		el.firstChild.childNodes[i].style.display = "block";
	}
}
function hideMenu(el) {
	for (var i = 0; i < el.firstChild.childNodes.length; i++) {
		el.firstChild.childNodes[i].style.display = "none";
	}
	if (el.firstChild.childNodes[0] != null) {
		el.firstChild.childNodes[0].style.display = "block";
	}
}