View file templates/admin_stages_filter.tpl

<form method=post name="s_form" action="{$smarty.server.PHP_SELF}">
<table>
<tr>
   <td>Parent:</td>
   <td>	<select name="s_parent_id">
	{html_options values=$s_parent_ids selected=$s_parent_id output=$s_parent_names}
        </select>
   </td>
   <td><label for=s_level1>1-st level children only:</td><td> <input type="checkbox" id="s_level1" name="s_level1" value="1" style="border-width:0px" {if $s_level1}checked{/if}></label>
   </td>
</tr>
<tr>
   <td>Status:</td>
   <td>	<select name="s_status_id">
	{html_options values=$s_status_ids selected=$s_status_id output=$s_status_names}
        </select>
   </td>
   <td><label for=s_final>final only:</td><td> <input type="checkbox" id="s_final"name="s_final" value="1" style="border-width:0px" {if $s_final}checked{/if}></label>
   <td>
       <input type="submit" value="Apply">
   </td>
</tr>
</table>
</form>