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Test Info:

<head>
<script>
function boom()
{
document.documentElement.style.emptyCells = "show";
document.getElementsByTagName("td")[0].style.borderColor = "magenta";
document.getElementsByTagName("col")[0].style.position = "absolute";
}
</script>
</head>
<body onload="boom();">
<td><col span="3"></col></td>
</body>
</html>