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<html>
<head>
<script type="text/javascript">
function setFixedTableLayout()
{
document.getElementById('myTable').style.tableLayout="fixed";
}
</script>
</head>
<body>
<table id="myTable" border="1" width="100%">
<col width="20%"><col width="40%"><col width="40%">
<tr>
<td>1000000000000000000000000000</td>
<td>10000000</td>
<td>100</td>
</tr>
</table>
<input type="button" onclick="setFixedTableLayout()"
value="Set fixed table layout">
</body>
</html>