var speed, currentpos=curpos1=0,alt=1,curpos2=-1

function initialize(){
if (window.parent.scrollFrame.scrollspeed!=0){
speed=window.parent.scrollFrame.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)
}

setTimeout("setInterval('initialize()',10)",500);