<form name="form1" method="post" action="">
<td><div align="center">查看选项:
<select name="select" onchange="document.location.href=this.value">
<option value="/ports/portonelist">1</option>
<option value="/ports/porttwolist">2</option>
<option value="/ports/portthreelist">3</option>
</select>
</div></td>
</form>
<td><div align="center">查看选项:
<select name="select" onchange="document.location.href=this.value">
<option value="/ports/portonelist">1</option>
<option value="/ports/porttwolist">2</option>
<option value="/ports/portthreelist">3</option>
</select>
</div></td>
</form>
<script language=javascript>
function select_change()
{
...
}
</script>
</head><form name="form1" method="post" action="">
<td><div align="center">查看选项:
<select name="select" onchange="select_change();" >
<option value="/ports/portonelist">1</option>
<option value="/ports/porttwolist">2</option>
<option value="/ports/portthreelist">3</option>
</select>
</div></td>
</form>