anchor.diff:      <table>
           <tr  id="mytable-PAGE.ROW.INDEX">
               <td class="alt">
  -                <input type="hidden" id="investigatorPAGE.ROW.INDEX"
  +                <input type="hidden" id="investigatorPAGE.ROW.INDEX-hidden"
                           name="studySites[${selected_site}].studyInvestigators[PAGE.ROW.INDEX].healthcareSiteInvestigator"
                          value="studySites[${selected_site}].studyInvestigators[PAGE.ROW.INDEX].healthcareSiteInvestigator"/>
                   <input class="validate-notEmpty" type="text" id="investigatorPAGE.ROW.INDEX-input"
  
positive.code: </jsp:attribute>
  
      <jsp:attribute name="localButtons">
          <input type="button" onclick="addRow();" value="Add Investigators"/>
      </jsp:attribute>
  
  </tags:tabForm>
  
negative.code:         <c:forEach varStatus="status" items="${command.studySites[selected_site].studyInvestigators}">
              <tr id="mytable-${status.index}">
                  <td class="alt">
                      <form:hidden id="investigator${status.index}-hidden"
                                   path="studySites[${selected_site}].studyInvestigators[${status.index}].healthcareSiteInvestigator"/>
                      <input class="validate-notEmpty" type="text" id="investigator${status.index}-input" size="30"
                             value="${command.studySites[selected_site].studyInvestigators[status.index].healthcareSiteInvestigator.investigator.fullName}"/>
  