<head>
    <script src="repaint.js" type="text/javascript"></script>
    <script>
        function repaintTest()
        {
            document.getElementById("q").style.height = "200px";
        }
    </script>
</head>
<body onload="runRepaintTest()">
    <div style="position: absolute; top: 50px; left: 0; overflow: overlay; width: 100px; height: 100px; border: solid">
        <div id="q" style="position: absolute; top: 0; height: 50px; width: 10px;"></div>
    </div>
</body>