var ie4 = (document.all) ? true : false;
var ns4 = (document.layers) ? true : false;
var ns6 = (document.getElementById && !document.all) ? true : false;

function Layer_verstecken(lay) {
if (ie4) {document.all[lay].style.visibility = "hidden";}
if (ns4) {document.layers[lay].visibility = "hide";}
if (ns6) {document.getElementById([lay]).style.display = "none";}
}

function Layer_zeigen(lay) {
if (ie4) {document.all[lay].style.visibility = "visible";}
if (ns4) {document.layers[lay].visibility = "show";}
if (ns6) {document.getElementById([lay]).style.display = "block";}
}

// Fix Netscape 4.x resize bug...
if (ns4) {
	origWidth = innerWidth;
    origHeight = innerHeight;
}

function reDo() {
   if (innerWidth != origWidth || innerHeight != origHeight) 
      location.reload();
}

if (ns4) onresize = reDo;
// End of Fix Netscape 4.x resize bug...

//error blocker wg. laden der bilder
	onerror=stopError;
	function stopError()
	{
	return true;
	}