标题不随滚动条变化的表

可以运用这种方式，自己做个DataGrid控件

<table width="300"  border="0" cellpadding="0" cellspacing="1" bgcolor="#0099CC">
  <tr> 
    <th width="25%" nowrap><font color="#FFFFFF"> 123 </font></th>
    <th width="25%" nowrap><font color="#FFFFFF"> 456 </font></th>
    <th width="25%" nowrap><font color="#FFFFFF"> 789 </font></th>
    <th width="25%" nowrap><font color="#FFFFFF"> abc </font></th>
  </tr>
</table>
<span style="overflow-y:auto;height:100px;width:320px">
<table width="300"  border="0" cellpadding="0" cellspacing="1" bgcolor="#0099CC">
  <tr bgcolor="#FFFFFF"> 
    <td width="25%"> 1</td>
                
    <td width="25%"> 4</td>
                
    <td width="25%"> 7</td>
                
    <td width="25%"></td>
        </tr>
        
  <tr bgcolor="#FFFFFF"> 
    <td > 2</td>
                
    <td > 5</td>
                
    <td> 8</td>
                
    <td> b</td>
        </tr>
        
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
  <tr bgcolor="#FFFFFF"> 
    <td> 3 </td>
                
    <td> 6 </td>
                
    <td> 9 </td>
                
    <td > c </td>
        </tr>
</table>
</span>