header of table ====

<td width="18%" align="left">
    <a href="javascript:void(0)" onclick="sort_all('discount',document.getElementById('sorttype_discount').value);">
           Net Sale Price
          </a>
          <input type="hidden" name="sorttype_discount" id="sorttype_discount" value="{if $sorttype_discount}{$sorttype_discount}{else}ASC{/if}"/>
        </td>
========================

loop to create table rows has=========

        <form name="changeprice" action="" method="post" onsubmit="return is_validData();" >
        <td align="left"><strong>Rs. {$product_arr[i].discount}</strong><br />Change: <input type="name" name="chprice" style="width: 60px;" />
        <input type="hidden" name="chpriceid" value="{$product_arr[i].productmanualid}" />
        <input type="submit" name="submit" value="Go" />
        </td>
        </form>
===================================