<head>
    <!-- The entire viewport should be white, with no red margin. -->
    <script src="resources/repaint.js" type="text/javascript"></script>
    <script type="text/javascript">
       function repaintTest()
       {
            document.body.style.display = "none";
       }
    </script>
</head>
<body onload="runRepaintTest();" style="margin: 50px; background-color: red;">
</body>