Huske position vha cookie

I en anden tråd læste jeg at man kan få lysavisen til at huske hvor den var kommet til når siden opdateres.
Jeg vil gerne have sat den funktion ind i dette script:

<script language="javascript">
var marqueewidth=304
var marqueeheight=14
var marqueespeed=1
var marqueebgcolor=""

var marqueecontent='<nobr><?php echo $row["newsticker_text"]; ?></nobr>'

marqueespeed=(document.all)? marqueespeed : Math.max(1, marqueespeed-1) //slow speed down by 1 for NS
var copyspeed=marqueespeed
var iedom=document.all||document.getElementById
if (iedom)
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
var actualwidth=''
var cross_marquee, ns_marquee

function populate(){
if (iedom){
cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
cross_marquee.style.left=marqueewidth+8
cross_marquee.innerHTML=marqueecontent
actualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
}
else if (document.layers){
ns_marquee=document.ns_marquee.document.ns_marquee2
ns_marquee.left=marqueewidth+8
ns_marquee.document.write(marqueecontent)
ns_marquee.document.close()
actualwidth=ns_marquee.document.width
}
lefttime=setInterval("scrollmarquee()",20)
}
window.onload=populate

function scrollmarquee(){
if (iedom){
if (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed
else
cross_marquee.style.left=marqueewidth+8

}
else if (document.layers){
if (ns_marquee.left>(actualwidth*(-1)+8))
ns_marquee.left-=copyspeed
else
ns_marquee.left=marqueewidth+8
}
}

if (iedom||document.layers){
with (document){
if (iedom){
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'">')
write('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
write('</div></div>')
}
else if (document.layers){
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')
write('<layer name="ns_marquee2" left=0 top=0"></layer>')
write('</ilayer>')
}
}
}
</script>

Kan det lade sig gøre ?
Hvis ja, hvordan ?