请那里出问题
<table width="100%" height="30" border="0" cellpadding="0" cellspacing="0" class="meny" onclick="disp_m1()">
<tr>
<td align="center">基本信息</td
</tr>
</table>
<table width="100%" height="60" border="0" cellpadding="0" cellspacing="0" class="xmenu" id="m1">
<tr>
<td align="center">修改密码</td>
</tr>
<tr>
<td align="center">系统信息</td>
</tr>
<tr>
<td align="center">添加管理员</td>
</tr>
</table>
</body>
</html>
<script language=javascript>
function disp_m0(){
m1.style.display = "none";
}
function disp_m1()
{
disp_m0();
m1.style.display = "";
}
</script>
我要效果一点他就出现!!!!!!!!