function popMenu(M) {
	hideActive();
	ActiveMenu = document.getElementById(M);
	showIt(ActiveMenu);
}

function hideIt(object) {
   object.style.visibility="hidden";
}

function showIt(object) {
   object.style.visibility="visible";
}

function show(name,src) {
    if (document.images)
        document.images[name].src = src;
}