var n = navigator.appName
dom=0;ns=0;ie=0;

	if (n=="Netscape")  {
	    browserVer = parseInt(navigator.appVersion);
		if (browserVer >=5)
			dom=1;
		else
			ns=1;
		}
	else
			ie=1;

	if (ns)  {
		ebene=document.eval("Geduld")
		if(ebene.visibility=="hide") ebene.visibility="show";
		else ebene.visibility="hide";
	}

	if (dom)  {
		if (document.getElementById("Geduld").style.visibility=="hidden")
			document.getElementById("Geduld").style.visibility="visible"
		else
			document.getElementById("Geduld").style.visibility="hidden"
	}

	if (ie) {
		ebene=eval("Geduld").style
		if(ebene.visibility=="hidden") ebene.visibility="visible";
		else ebene.visibility="hidden";
	}