Scrolling two frames together

<script type="text/javascript">
<!--
IE=document.all
function scrollme(){
if(IE){
parent.leftframe.document.body.scrollTop=parent.rightframe.document.body.scrollTop
}
else{
parent.leftframe.scrollTo(0,parent.rightframe.document.body.scrollTop) // parent.right.pageYOffset
}
}
onscroll=scrollme
// -->
</script>

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