<html>
<head>
<title>Background Slide Show</title>
<script language="JavaScript1.2">
var bgimages=new Array()
var pathToImg=new Array();
bgimages[0]="http://lh4.ggpht.com/pascal.herbert/SA9MkeRXy2I/AAAAAAAAIVQ/496OaNjEd8M/s800/Doodle4Google_Euro2008.jpg"
bgimages[1]="http://lh4.ggpht.com/pascal.herbert/SBI_guRXzDI/AAAAAAAAIZY/Cup2OtFV6aE/s800/Dodole4Google%20de%20auf%20google.de.png"
bgimages[2]="images/missionbg3.jpg"
//preload images
var pathToImg=new Array()
for (i=0;i<bgimages.length;i++){
pathToImg[i]=new Image()
pathToImg[i].src=bgimages[i]
}
var inc=-1
function bgSlide(){
if (inc<bgimages.length-1)
inc++
else
inc=0
document.body.background=pathToImg[inc].src
}
if (document.all||document.getElementById)
window.onload=new Function('setInterval("bgSlide()",3000)')
</script>
</head>
<body>
<div id="hund" style="margin: 20px auto; background-color:#FF0000; width:960; padding-top: 12px; height: 500px; background-attachment:fixed;"/>
<p>dosadosndsifnpisnfsanfsonfsaofsn</p>
<p>osadosndsifnpisnfsanfsonfsaofsn</p>
osadosndsifnpisnfsanfsonfsaofsn</div>
</body>
</html>
so muss es sein, nur das der Hintergrund sich im DIV wechseln soll.