<!--
var offen="";

function testen()
{
if ((navigator.appName=="Microsoft Internet Explorer")&&(navigator.appVersion.charAt(0)>=4))
{schicht="document.all";stil=".style";}
else if 
((navigator.appName =="Netscape")&&(navigator.appVersion.charAt(0)>=4))
{schicht="document.layers";stil="";}
else
window.location.href="einfach-page.html";
}

function zeig(wen)
{
if (offen)
{ eval(schicht+'["'+offen+'"]'+stil+'.visibility="hidden"');
}
if (wen)
{
eval(schicht+'["'+wen+'"]'+stil+'.visibility="visible"');
offen=wen;
}
}

function pruef(wen)
{
if (offen)
zeig(wen);
}

function ende()
{
zeig();
offen="";
}

function pdstart() {
testen();
if(stil==".style") {
document.onmouseup=ende;
}
else {
window.captureEvents(Event.MOUSEUP);
window.onmouseup=ende;
}
}
// -->