/* FlyWithWind.org, FWW8FB, 4 Ver. 3 */

var preMenu = null;

function ShowMenu(mother) {
	sun = document.getElementById("submenu-" + mother.id);
	sun.style.visibility = "visible";
	if ((preMenu) && (preMenu != sun)) preMenu.style.visibility = "hidden";
	preMenu = sun;
}

function HideMenu() {
	if (preMenu) preMenu.style.visibility = "hidden";
}