console 命令行工具 X clear

console

<html>
<head>
<style type="text/css">
tr.coll
 {
 visibility:collapse
 }
</style>
</head>
<body>

<table border="1">
<tr>
<td>Adams</td>
<td>John</td>
</tr>
<tr class="coll">
<td>Bush</td>
<td>George</td>
</tr>
</table>

</body>
</html>