var speed, currentpos=curpos1=0,alt=1,curpos2=-1 
 function initialize(){
 if (window.parent.scrollspeed!=0){
 speed=window.parent.scrollspeed
 scrollwindow()
 }
 } 
 function scrollwindow(){
 temp=(document.all)? document.body.scrollTop : window.pageYOffset
 alt=(alt==0)? 1 : 0
 if (alt==0)
 curpos1=temp
 else
 curpos2=temp 
 window.scrollBy(0,speed)
 } 
 setInterval("initialize()",10)