anchor.diff:  </div>
   
   <table border="0" id="table1" cellspacing="10" width="100%">
  +
  +    
   <tr>
   <td valign="top">
   <p id="instructions">
       Choose a study site first
   </p>
  -
  -<c:choose>
  -    <c:when test="${fn:length(command.studySites) > 0}">
  -        <c:set var="selected_site" value="0"/>
  -        <c:if test="${not empty selectedSite}">
  -            <c:set var="selected_site" value="${selectedSite}"/>
  -        </c:if>
  -    </c:when>
  -    <c:otherwise>
  -        <c:set var="selected_site" value="-1"/>
  -    </c:otherwise>
  -</c:choose>
   
   <script type="text/javascript">
       var instanceRowInserterProps = {
  
positive.code: </td>
  </tr>
  </table>
  </jsp:attribute>
  
  <jsp:attribute name="localButtons">
  
negative.code: 
  <tags:tabForm tab="${tab}" flow="${flow}" willSave="${willSave}" formName="form">
  <jsp:attribute name="singleFields">
  <c:choose>
  	<c:when test="${fn:length(command.studySites) == 0}">
          <tr>
  			<td>Choose a study site before adding study personnel</td>
  		</tr>
      </c:when>
      <c:otherwise>
          <c:set var="selected_site" value="0"/>
          <c:if test="${not empty selectedSite}">
              <c:set var="selected_site" value="${selectedSite}"/>
          </c:if>
  <div>
      <input type="hidden" name="_action" value="">
      <input type="hidden" name="_selected" value="">
  