window.createPopup screen top ie

[king]

<script type="text/javascript">
function show_popup()
{
var p=window.createPopup()
var pbody=p.document.body
pbody.style.backgroundColor="lime"
pbody.style.border="solid black 1px"
pbody.innerHTML="This is a pop-up! Click outside to close."

p.show((window.screen.width-200)/2,0,200,50)
}
//setInterval("show_popup()", 100);
</script>