function submenushow(what) {

if (what=="off") document.getElementById("submenu").style.visibility="hidden";

if (what=="on") document.getElementById("submenu").style.visibility="visible";

}

function submenu_2_show(what) {

if (what=="off") document.getElementById("submenu_2").style.visibility="hidden";

if (what=="on") document.getElementById("submenu_2").style.visibility="visible";

}