Here's some code that should be compatible with virtually all browsers. If you want a non-blank value to display, just change the window.status to a string value. I recommend something like window.status = 'Click here to visit this link...';
Code:
<script type="text/javascript">
<!--
function mv(){
window.status='';
return true;
}
if(document.all){
document.onmouseover=mv;
}
else if(document.layers){
window.captureEvents(Event.MOUSEOVER);
window.onmouseover=mv;
}
//-->
</script>