Untitled

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
</head>
<style type="text/css">
	body 
	{
		margin-left: 0px;
		margin-top: 0px;
		margin-right: 0px;
		margin-bottom: 0px;
		position: absolute;
		padding: 0;
		width: 100%;
		height: 100%;
	}
	.bgDiv
	{
	left: 0px;
	top: 0px;
	height: 100%;
	width: 100%;
	margin-left: 0px;
	margin-top: 0px;
	position: absolute;
	background-color: #FF0000;
	}
	.flashContainer
	{
	left: 0px;
	top: 0px;
	height: 90%;
	width: 90%;
	margin-left: 0px;
	margin-top: 0px;
	position: absolute;
	background-color: #0000FF;
	}
</style>
<script language="JavaScript">
	function checkSize()
	{
		var flashContainer = document.getElementById('flashContainer');
		var w = document.body.offsetWidth;
		var h = document.body.offsetHeight;
		alert(document.body.bgDiv.width);
	}
</script>
<body onresize="checkSize();">
<div class="bgDiv"><div class="flashContainer"></div></div>
</body>
</html>