I don't have any good solution to fix the head and column of a table which has following type structure:
<table>
<thead>
<tr>
<th colspan="4">Current</th>
<th colspan="4">New/Requested</th>
</tr>
<tr>
<th nowrap="nowrap">RSD </th>
<th nowrap="nowrap">CRSD </th>
<th nowrap="nowrap">MSD </th>
<th nowrap="nowrap">Open QTY </th>
<th nowrap="nowrap">CRD </th>
<th nowrap="nowrap">CRSD </th>
<th nowrap="nowrap">MSD </th>
<th nowrap="nowrap">Open QTY </th>
<th nowrap="nowrap">Action</th>
<th nowrap="nowrap">Reason</th>
<th nowrap="nowrap">Action Code Status </th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td></td>
.....plenty of rows
</tr>
</tbody>
</table>
and getting populated through ajax call, please provide a good solution in which I can use my previous css as well. (mean it will not require any css changes).