这个东西其实很简单，以前也搞过，就是关键的一点忘了。
右边的内容框架需给name一个值，如：Right；左边的导航框架里的链接需 target="Right"
main
<html>
<frameset cols="120,*">
<frame src="left.aspx">
<frame src="right.aspx" name="Right">
</frameset>
</html>
left
<table cellpadding="0" cellspacing="0" style="margin: 8px 8px 8px 8px; border: solid 1px #B7D8ED; background-color:White;"
width="150">
<tr style="padding-left: 8px; padding-right: 0px;" height="30">
<td width="12">
<img src="../images/banner.gif" />
</td>
<td class="left" onmouseover="onMover(this)" onmouseout="onMout(this)">
<a href="myUsers.aspx" target="Right">我的会员</a>
</td>
</tr>
<tr style="padding-left: 8px; padding-right: 0px;" height="30">
<td width="12">
<img src="../images/banner.gif" />
</td>
<td class="left" onmouseover="onMover(this)" onmouseout="onMout(this)">
退出
</td>
</tr>
</table>
<html>
<frameset rows="70,*">
<frame src="Top.aspx" frameborder="0" scrolling="no" style="border: solid 1px #B7D8ED"
noresize="noresize" />
<frameset cols="200,*">
<frame src="left.aspx" frameborder="0" style="border: solid 1px #B7D8ED" noresize="noresize"
name="left" />
<frame src="right.aspx" frameborder="0" style="border: solid 1px #B7D8ED" noresize="noresize"
name="Right" />
</frameset>
</frameset>
</html>