anchor.diff:  
       <div class="hrClear">
           <hr/>
  +    <form id="expressionListFilterForm" action="alert('error');">    
       <table width="100%" id="squery">
           <tr class="header">
                   <th align="left" class="padded" style="border-bottom:1px solid #CDCDCD">&nbsp;</th>
  
positive.code:         <tbody id="expressionTableBody">
          </tbody>
      </table>
      </div>
  
  
  
negative.code:                 <select id="updownFilter" style="width:100%;"><option value="UP_DOWN">up/down</option><option value="UP">up</option><option value="DOWN">down</option><option value="NON_D_E">non d.e.</option></select>
              </td>
              <td class="padded" colspan="2">
                  <input type="submit" value="SEARCH"/>
                  <!--
                  <input type="button" value="show all"/>
                  -->
  