css 固定表头 拖动滚动条时对应表头所对应的列

<style type="text/css">
<!--
body,table, td, a {font:9pt;}
/重点固定行头样式/
.scrollRowThead{position: relative; left: expression(this.parentElement.parentElement.parentElement.parentElement.scrollLeft);z-index:0;}
/重点固定表头样式/
.scrollColThead {position: relative;: expression(this.parentElement.parentElement.parentElement.scrollTop);z-index:2;}
/行列交叉的地方/
.scrollCR { z-index:3;}
/div外框/
.scrollDiv {height:200px;clear: both; border: 1px solid #EEEEEE;OVERFLOW: scroll;width: 320px; }
/行头居中/
.scrollColThead td,.scrollColThead th{ text-align: center ;}
/行头列头背景/
.scrollRowThead,.scrollColThead td,.scrollColThead th{background-color:EEEEEE;}
/表格的线/
.scrolltable{border-bottom:1px solid #CCCCCC; border-right:1px solid #CCCCCC; }
/单元格的线等/
.scrolltable td,.scrollTable th{border-left: 1px solid #CCCCCC; border-: 1px solid #CCCCCC; padding: 5px; }
.scrollTable thead th{background-color:#EEEEEE;font-weight:bold;position:relative;}
-->
</style>

<h1>利用CSS代码让Table产生固定表头</h1>
<div id="scrollDiv" class="scrollDiv" >
<table border="0" cellpadding="3" cellspacing="0" width="500" class="scrollTable">
<thead>
<tr class="scrollColThead" >
<th class="scrollRowThead scrollCR" >&nbsp;</th>
<th colspan="2">列头</th>
<th colspan="2">列头</th>
<th rowspan="2">列头</th>
</tr>
<tr class="scrollColThead" >
<th class="scrollRowThead scrollCR" >h1</th>
<th >h2</th>
<th >h3</th>
<th >h4</th>
<th >h5</th>
</tr>
</thead>
<tr>
<td class="scrollRowThead" >
<input type="checkbox" name="checkbox" value="checkbox">
a</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td>单元格5</td>
</tr>
<tr>
<td class="scrollRowThead" >
<input type="checkbox" name="checkbox2" value="checkbox">
b</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td>单元格5</td>
</tr>
<tr>
<td nowrap class="scrollRowThead" >
<input type="checkbox" name="checkbox3" value="checkbox">
c</td>
<td nowrap>单元格2</td>
<td nowrap>单元格3</td>
<td nowrap>单元格4</td>
<td nowrap>单元格5</td>
<td nowrap>单元格5</td>
</tr>
<tr>
<td class="scrollRowThead" >
<input type="checkbox" name="checkbox4" value="checkbox">
d</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td>单元格5</td>
</tr>
<tr>
<td class="scrollRowThead" >
<input type="checkbox" name="checkbox5" value="checkbox">
e</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td>单元格5</td>
</tr>
<tr>
<td class="scrollRowThead" >
<input type="checkbox" name="checkbox6" value="checkbox">
f</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td>单元格5</td>
</tr>
<tr>
<td class="scrollRowThead" >
<input type="checkbox" name="checkbox7" value="checkbox">
g</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td>单元格5</td>
</tr>
</table>
</div>