Code:
<html>
<head>
<style type="text/css">
#mydiv{width:100%;background-color:#F5F5F5}
</style>
<script type="text/javascript">
function setHeight(){
document.getElementById('mydiv').style.height=screen.height-200;
}
</script>
</head>
<body onload="setHeight()">
<div id="mydiv" style="height:100px">test</div>
</body>
</html>
this script fixes the screen height at 200px less than 100% of my desktop's screen height. this allows for toolbars, tabs and the likes
works fine in firefox but in IE7 i get a popup blocker asking if i want to allow the active content