anchor.diff:  
   
   <html>
  +<c:set var="selected_site" value="0"/>
  +<c:if test="${not empty selectedSite}">
  +	<c:set var="selected_site" value="${selectedSite}"/>
  +</c:if>
   <head>
   <tags:includeScriptaculous/>
   <tags:dwrJavascriptLink objects="StudyAjaxFacade"/>
  
positive.code: 		</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="">
  
negative.code: 
      <table border="0" id="investigatorsTable" cellspacing="0" class="tablecontent">
          <tr>
              <th><span class="required-indicator">Investigator-${fn:length(command.studyOrganizations[selected_site].studyInvestigators)}</span></th>
              <th><span class="required-indicator">Role</span></th>
              <th><span class="required-indicator">Status</span></th>
              <th></th>
  