var parentMenuBgColor;
var parentMenuColor;

function showMenu(childMenuId,parentMenuId,menuLevel) {
	var childMenu = document.getElementById(childMenuId);
	var parentMenu = document.getElementById(parentMenuId);
	if (menuLevel == 0) {
		parentMenuBgColor=parentMenu.style.backgroundColor;
		parentMenuColor=parentMenu.firstChild.style.color;
		parentMenu.style.backgroundColor="#9F9D9D";
		parentMenu.firstChild.style.color="white";
	}
	childMenu.style.visibility="visible";
}

function hideMenu(childMenuId,parentMenuId,menuLevel) {
	var childMenu = document.getElementById(childMenuId);
	var parentMenu = document.getElementById(parentMenuId);
	if (menuLevel == 0) {
		parentMenu.style.backgroundColor=parentMenuBgColor;
		parentMenu.firstChild.style.color=parentMenuColor;
	}
	childMenu.style.visibility="hidden";
}