Как убрать из расширенного поиска определённые категории?

<table cellpadding="4" cellspacing="0" width="100%">
  <tr>
    <td class="search">
      <div style="margin:10px;">
                <input type="text" name="story" id="searchinput" value="$findstory" class="textin" style="width:250px" onchange="document.getElementById('result_from').value = 1" /><br /><br />
                <input type="button" class="bbcodes" name="dosearch" id="dosearch" value="{$lang['s_fstart']}" onclick="javascript:list_submit(-1); return false;" />
              {$link_full_search} 
            </div>

        </td>
    </tr>
</table>

<table cellpadding="4" cellspacing="0" width="100%">
  <tr>
    <td class="search">
      <div style="margin:10px;">
                <input type="text" name="story" id="searchinput" value="$findstory" class="textin" style="width:250px" onchange="document.getElementById('result_from').value = 1" /><br /><br />
                <input type="button" class="bbcodes" name="dosearch" id="dosearch" value="{$lang['s_fstart']}" onclick="javascript:list_submit(-1); return false;" />
                <select>
<option  value="1" >cat1</option>
<option  value="2" >cat2</option>
</select>
                <!-- {$link_full_search}   -->
            </div>

        </td>
    </tr>
</table>