frameset使用：
<html>
<head>
<title>freameSet</title>
<meta charset="utf-8" />
</head>
<frameset rows="15%,*">
<frame src="sub1.html" />
<frameset border="1" onresize="no" cols="15%,*">
<frame src="sub2.html" />
<frame name="content" src="sub3.html" />
</frameset>
</frameset>
</html>
iframe使用：
<!DOCTYPE html>
<html>
<head>
<title>
xxx后台管理系统
</title>
<meta charset="utf-8"/>
</head>
<body>
<table border="1" cellpadding="0" cellspacing="0" width="100%" height="600">
<tr height="80">
<td colspan="2">这里是标题部分</td>
</tr>
<tr>
<td width="150">
<p><a target="content" href="http://www.baidu.com">百度</a></p>
<p><a target="content" href="http://www.igeekhome.com">极客营</a></p>
</td>
<td>
<iframe frameborder="0" width="100%" height="100%" src="demo1/sub3.html" name="content"></iframe>
</td>
</tr>
<table>
</body>
</html>