function classwechsel(elementid)
{
document.getElementById(elementid).className='kopfa';
classtauscher=document.getElementById(elementid).id;
}
//--- Popup-windows Start ----------
// Script Source: CodeLifter.com
// Copyright 2003
// Do not remove this notice.
// SETUPS:
// ===============================
// Set the horizontal and vertical position for the popup
// use in body: 
PositionX = 100;
PositionY = 100;
// Set these value approximately 20 pixels greater than the
// size of the largest image to be used (needed for Netscape)
defaultWidth = 500;
defaultHeight = 500;
// Set autoclose true to have the window close automatically
// Set autoclose false to allow multiple popup windows
var AutoClose = true;
// Do not edit below this line...
// ================================
if (parseInt(navigator.appVersion.charAt(0))>=4){
var isNN=(navigator.appName=="Netscape")?1:0;
var isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}
var optNN='scrollbars=no,width='+defaultWidth+',height='+defaultHeight+',left='+PositionX+',top='+PositionY;
var optIE='scrollbars=no,width=150,height=100,left='+PositionX+',top='+PositionY;
function popImage(imageURL,imageTitle){
if (isNN){imgWin=window.open('about:blank','',optNN);}
if (isIE){imgWin=window.open('about:blank','',optIE);}
with (imgWin.document){
writeln('Loading...');writeln('');
writeln('var isNN,isIE;');writeln('if (parseInt(navigator.appVersion.charAt(0))>=4){');
writeln('isNN=(navigator.appName=="Netscape")?1:0;');writeln('isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}');
writeln('function reSizeToImage(){');writeln('if (isIE){');writeln('window.resizeTo(300,300);');
writeln('width=300-(document.body.clientWidth-document.images[0].width);');
writeln('height=300-(document.body.clientHeight-document.images[0].height);');
writeln('window.resizeTo(width,height);}');writeln('if (isNN){');
writeln('window.innerWidth=document.images["George"].width;');writeln('window.innerHeight=document.images["George"].height;}}');
writeln('function doTitle(){document.title="'+imageTitle+'";}');writeln('');
if (!AutoClose) writeln('')
else writeln('');
writeln('
');
close();
}}
//--- Popup-windows Ende ----------