案例:javascript案例     状态:可编辑再运行    进入横版
x
<input type="button" onclick="aboveFrames()" value="显示上边框">
 
1
<html>
2
<head>
3
<script type="text/javascript">
4
function aboveFrames()
5
  {
6
  document.getElementById('myTable').frame="above"
7
  }
8
function belowFrames()
9
  {
10
  document.getElementById('myTable').frame="below"
11
  }
12
</script>
13
</head>
14
<body>
15
16
<table id="myTable">
17
<tr>
18
<td>100</td>
19
<td>200</td>
20
</tr>
21
<tr>
22
<td>300</td>
23
<td>400</td>
24
</tr>

 运行结果 
 北美留学生论坛