how can i add a scroll bar to this code?

[help120]

<script language=&quot;JavaScript&quot;>
//<!--

var launchMap = null;

var w = 0;
var h = 0;

function deadCentre(url,w,h) {
if (window.screen) {
var chasm = screen.availWidth;
var mount = screen.availHeight;
launchMap = window.open(url,'posB','width=' + w + ',height=' + h + ',left=' + ((chasm - w - 10) * .5) + ',top=' + ((mount - h - 30) * .5));
}
}
// -->
</script>

 

[thessa]

try this
launchMap = window.open(url,'posB','scrollbars=yes','width=' + w + ',height=' + h + ',left=' + ((chasm - w - 10) * .5) + ',top=' + ((mount - h - 30) * .5));