function submenuopen(element) {
	children = element.getElementsByTagName("div");
	for (i = 0; i < children.length; i++) {
		child = children[i];
		child.style.display = 'block';
	}
}

function submenuclose(element) {
	children = element.getElementsByTagName("div");
	for (i = 0; i < children.length; i++) {
		child = children[i];
		child.style.display = 'none';
	}
}