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<html>
<table>
<tr>
<td width="10%">第一列</td>
<div style="text-overflow:ellipsis;white-space:nowrap;overflow:hidden;"><td width="80%">aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbccccccccccccccccccccccccccccccccccccddddddddddddddddddddddddddddddddddeeeeeeeeeeeeeeeeeeeeeeeeeeeee</td></div>
<td width="10%">第三列</td>
</tr>
</table>
</html>
<head>
<script>
window.onload=function()
{
var obj = document.getElementById('test');
obj.style.width = document.documentElement.clientWidth * 4 / 5 + 'px';
}
</script>
</head>
<body>
<table>
<td width="10%">111</td>
<td><div id="test" style="overflow:hidden; text-overflow:ellipsis; white-space:nowrap;">aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbccccccccccccccccccccccccccccccccccccddddddddddddddddddddddddddddddddddeeeeeeeeeeeeeeeeeeeeeeeeeeeee</div></td>
<td width="10%" style="float:right;">222</td>
</table>
</body>
</html>