<html>
<head>
<style>
body
{
background-image:url('smiley.gif');
background-repeat:no-repeat;
background-attachment:fixed;
background-position:center;
}
</style>
</head>
<body>
<p><b>Note:</b> For this to work in Firefox and Opera, the background-attachment property must be set to "fixed".</p>
</body>
</html>