anchor.diff:          <th>
          <c:choose>
            <c:when test="${fn:length(tracks[exp.name]) == 1}">
  -           <c:out value="${fn:length(tracks[exp.name])}"/> GBrowse track
  +         GBrowse track
            </c:when>
            <c:otherwise>
              <c:out value=" "/> GBrowse tracks:
  
positive.code:   border-bottom: none;
    border-top:none;
    background-color: #DFA;
  }
  
  .dbsources table.features .firstrow {
  
negative.code: </c:choose>
  
  </c:forEach>
  
  
  <tr>
  <td >
  <c:if test="${fn:length(tracks[exp.name]) > 1 }">
  <b><html:link 
       href="${baseUrl}${organism}/?label=${urlabels}" target="_blank" title="View all the tracks for this experiment">
       All ${fn:length(tracks[exp.name])} tracks
  </html:link></b>     
  </c:if>
  
  <c:if test="${fn:length(tracks[exp.name]) == 1}">
  <b><html:link 
       href="${baseUrl}${organism}/?label=${urlabels}" target="_blank" title="View the track generated for this experiment">
       ${urlabels}
  </html:link></b>
  </c:if>
       
  </td>
  <td>
  <c:choose>
   <c:when test="${!empty fly}">
  
  <html:link href="${baseUrl}fly/?ref=X;label=${urlabels}" target="_blank">X</html:link>
  <td>
  <html:link href="${baseUrl}fly/?ref=2L;label=${urlabels}" target="_blank">2L</html:link>
  