<head>
    <!-- The html element steals body's red background whether body has a box or not. -->
    <script type="text/javascript">
       if (window.testRunner)
          window.testRunner.dumpAsTextWithPixelResults();
       function runTest()
       {
            document.body.style.display = "none";
       }
    </script>
</head>
<body onload="runTest();" style="margin: 50px; background-color: red;">
</body>