U.Helper

'<style>body {width:'+screen.width+'px;height:'+screen.height+'px}</style>'

<script>    
document.write('<style>body {width:'+screen.width+'px;height:'+screen.height+'px}</style>')    
</script>

<div id="test" style="border: 1px solid red;"></div>
<script type="text/javascript">
$('#test').css('width', screen.width +'px').css('height', screen.height +'px');
</script>

screen = {
availHeight: 1000,
availWidth: 1280,
colorDepth: 32,
height: 1024,
pixelDepth: 32,
width: 1280
}

html, body {width:100%; height:100%; padding:0; margin:0}