var ie= ((document.all)&&(!document.layers)) ? true : false;
var ns= ((document.layers)&&(!document.getElementById)) ? true : false;
var moz= ((document.getElementById)&&(!document.all)) ? true : false;

function show(div){
if(ie) {document.all[div].style.visibility="visible";}
if(ns) {document.layers[div].visibility="show";}
if(moz) {document.getElementById(div).style.visibility="visible";}
}
function hide(div){
if(ie) (document.all[div].style.visibility="hidden")
if(ns) (document.layers[div].visibility="hide")
if(moz) (document.getElementById(div).style.visibility="hidden")
}

function hide1(div){
hide(div);
}

var hideMenue = null;

function setTopOn() {
hideMenue=setTimeout('hideAll()',750)
}

function setTopOff() {
clearTimeout(hideMenue);
hideAll();
}


function setOn() {
hideMenue=setTimeout('hideAll()',750)
}

function setOff() {
clearTimeout(hideMenue);
}
function hideAll(){
hide('menue_bm');
hide('menue_angebote');
hide('menue_aktiv');
hide('menue_kontakt');
}