Moving a layer div

Is it possible to mod the code below to have a layer div move instead of the whole web page?

<script language="JavaScript1.2">
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)

</script>

Code (markup):

I need only the layer to move on the page and not the background or anything else outside of the layer. Is this possible??

Thanks!
David

 

Yes.

psudo code that touches the topics you need

var divObj = document.getElementById('myDiv');
var divTop = 50;
divObj.style.position = 'absolute';
divObj.style.top = divTop + 'px';

function scrollDiv () {
divObj += increment;
divObj.style.top = divTop + 'px';
}