效果如下：
C1
C2
C3
C4 onmouseover事件和onmouseout事件，nowrap
C5
C6
C7
C8
C9
R1
R2
R3
R4
R4C4
R4C5
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R19C9
代码如下：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>在客户端把表格 行变成列，列变成行</title>
<script language="javascript">
function test(objTab)
{
var tabArray = new Array();
for(var i = 0;i<objTab.rows[0].cells.length;i++)
{
var tmpArray = new Array()
for(var j = 0; j<objTab.rows.length;j++)
{
tmpArray[tmpArray.length] = objTab.rows[j].cells[i].outerHTML
}
tabArray[tabArray.length] = tmpArray;
}
var str = "";
for(var i =0;i<tabArray.length;i++)
{
str += "<tr>" + tabArray[i].join("") + "</tr>"
}
str = "<table width=\"200\" border=\"1\" id=\"tab\">" + str + "</table>";
objTab.outerHTML = str
}
</script>
<style type="text/css">
<!--
.style1 {color: #330099}
-->
</style>
</head>
<body>
<table width="200" border="1" id="tab">
<tr>
<td> </td>
<td bgcolor="#FF0000">C1</td>
<td bgcolor="#00FF66">C2</td>
<td>C3</td>
<td nowrap onMouseOver="this.bgColor='#66FFFF'" onMouseOut="this.bgColor=''">C4 onmouseover事件和onmouseout事件，nowrap</td>
<td>C5</td>
<td>C6</td>
<td>C7</td>
<td>C8</td>
<td>C9</td>
</tr>
<tr>
<td>R1</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td bgcolor="#006666">R2</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td bgcolor="#00CCFF"><span class="style1">R3</span></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R4</td>
<td> </td>
<td> </td>
<td> </td>
<td>R4C4</td>
<td>R4C5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R6</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R7</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R8</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R9</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R10</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R11</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R12</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R13</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R14</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R15</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R16</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R17</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R18</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>R19</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td>R19C9</td>
</tr>
</table>
<br>
<input type="button" name="Submit" value="按钮" onClick="test(tab)">
</body>
</html>
