<script language="JavaScript1.2"> 
//change 1 to another integer to alter the scroll speed. Greater is faster 
var speed=1 
var currentpos=0,alt=1,curpos1=0,curpos2=-1 
function initialize(){ 
startit() 

function scrollwindow(){ 
if (document.all) 
temp=document.body.scrollTop 
else 
temp=window.pageYOffset 
if (alt==0) 
alt=1 
else 
alt=0 
if (alt==0) 
curpos1=temp 
else 
curpos2=temp 
if (curpos1!=curpos2){ 
if (document.all) 
currentpos=document.body.scrollTop+speed 
else 
currentpos=window.pageYOffset+speed 
window.scroll(0,currentpos) 

else{ 
currentpos=0 
window.scroll(0,currentpos) 


function startit(){ 
setInterval("scrollwindow()",10) 

window.onload=initialize 
</script>