如果何能使iframe的大小随着它包含的网页里面的table大小变化而变化？急切!!!

例如，怎样使iframe的高度和宽度随着table的高度和宽度改变而改变？如下：
Main.htm

1<html>
2<body>
3<div>
4<iframe <="" height="”变数”" iframe="" name="mm" src="”detail.htm”" width="”变数”">
5</iframe></div>
6</body>
7</html>

detail.htm

1<html>
2<body>
3<table bgcolor="red" border="0" height="”变数”" width="”变数”">
4<tr><td></td></tr>
5</table>
6</body>
7</html>

急切，请高手快指点！！！！

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main.htm

1<html>
2<body>
3<div>
4<iframe id="frmDetail" name="mm" scrolling="no" src="detail.htm" style="width:expression(this.contentWindow.document.all.tblDetail.width);height:expression(this.contentWindow.document.all.tblDetail.height)"></iframe>
5<button onclick="with(document.all.frmDetail.contentWindow.document.all.tblDetail){width=offsetWidth+1}">+</button>
6<button onclick="with(document.all.frmDetail.contentWindow.document.all.tblDetail){width=offsetWidth-1}">-</button>
7</div>
8</body>
9</html>

detail.htm

1<html>
2<body leftmargin="0" topmargin="0">
3<table bgcolor="red" border="0" height="100" id="tblDetail" width="100">
4<tr><td></td></tr>
5</table>
6</body>
7</html>

---------------------------------------------------------------

稍微变通一下就是啦.
main.htm

1<html>
2<body>
3<div>
4<iframe id="frmDetail" name="mm" onload="style.width=this.contentWindow.document.all.tblDetail.offsetWidth;style.height=this.contentWindow.document.all.tblDetail.offsetHeight" scrolling="no" src="tb.htm"></iframe>
5</div>
6</body>
7</html>

tb.htm

1<html>
2<body leftmargin="0" topmargin="0">
3<table bgcolor="red" border="0" height="100" id="tblDetail" width="100">
4<tr><td>   
5dddddddddddddddddddddddddddddddddddddddddddddddddddddddd   
6</td></tr>
7</table>
8</body>
9</html>

---------------------------------------------------------------

test.asp

1   
2url=Request.QueryString("url")

 1<body onload="document.all.ifId.style.width=parseInt(ifId.document.getElementsByTagName('table')[0].width)+20">
 2<iframe id="ifId" name="ifId" src="```
 3=url
 4```"></iframe>
 5<br/>
 6<a href="2.asp?url=1.asp">1.asp</a>
 7<br/>
 8<a href="2.asp?url=2.asp">2.asp</a>   
 9  
101.asp   
11<table width="500">
12<tr><td>   
13aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa   
14</td></tr></table>   
15  
162.asp   
17<table width="200">
18<tr><td>   
19aaaaaaaaa   
20</td></tr></table></body>