Help with creating a Popup Window.

Could someone please help me out with creating a popup window from within this Javascript ?
That is when clicking on the links you get a popup window that is centered with a predifiened Hight and Width.
How would the script be adjusted ?

HERE IS THE SCRIPT:
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<div style=”position:relative;left:0px;top:0px”>
<span id=”highlighter” style=”position:absolute;left:0;top:0;font-size:10px;font-family:Verdana;background-color:lightyellow;clip:rect(0px 0px auto 0px)”></span>
</div>
<script type=”text/javascript”>

var tickercontents=new Array()
tickercontents[0]=’Looking for free Java applets and resources? Visit <a href=”http://freewarejava.com”>Freewarejava.com</a>!’
tickercontents[1]=’Hop on over to <a href=”http://www.codingforums.com”>Coding Forums</a> to get help on web coding!’
tickercontents[2]=’This scroller’s brought to you by <a href=”http://www.javascriptkit.com”>JavaScript Kit</a>’

var tickdelay=8000 //delay btw messages
var highlightspeed=5 //10 pixels at a time.

var currentmessage=0
var clipwidth=0

function changetickercontent(){
crosstick.style.clip=”rect(0px 0px auto 0px)”
crosstick.innerHTML=tickercontents[currentmessage]
highlightmsg()
}

function highlightmsg(){
var msgwidth=crosstick.offsetWidth
if (clipwidth<msgwidth){
clipwidth+=highlightspeed
crosstick.style.clip=”rect(0px “+clipwidth+”px auto 0px)”
beginclip=setTimeout(“highlightmsg()”,20)
}
else{
clipwidth=0
clearTimeout(beginclip)
if (currentmessage==tickercontents.length-1) currentmessage=0
else currentmessage++
setTimeout(“changetickercontent()”,tickdelay)
}
}

function start_ticking(){
crosstick=document.getElementById? document.getElementById(“highlighter”) : document.all.highlighter
crosstickParent=crosstick.parentNode? crosstick.parentNode : crosstick.parentElement
if (parseInt(crosstick.offsetHeight)>0)
crosstickParent.style.height=crosstick.offsetHeight+’px’
else
setTimeout(“crosstickParent.style.height=crosstick.offsetHeight+’px'”,100) //delay for Mozilla’s sake
changetickercontent()
}

if (document.all || document.getElementById)
window.onload=start_ticking

</script>
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Regards
/Sven-Erik
SWEDEN

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