var submenus = new Array();

function displaysub(menuid){
submenus[menuid] = true;
document.getElementById(menuid).style.display = '';
document.getElementById(menuid).style.zIndex = 1000;
}

function hidesub(menuid){
submenus[menuid] = false;
document.getElementById(menuid).style.zIndex = 100;
setTimeout("if (!submenus['"+menuid+"']) {document.getElementById('" + menuid + "').style.display = 'none';};",100);
}