anchor.diff:  
   <c:set var="currentSection" scope="request" value="Matrices"/>
   <c:set var="headerPrefix" scope="request" value="${currentSection} for "/>
  +
  +<c:set var="serverName" scope="request" value="<%= request.getServerName() %>"/>
  +<c:set var="portNumber" scope="request" value="<%= request.getServerPort() %>"/>
  +<c:set var="baseURL" scope="request" value='http://${serverName}:${portNumber}/treebase-web/phylows/'/>
  +
   <jsp:include page="nav.jsp"/>
   
   <c:url var="studyURL" value="summary.html">
  
positive.code: 		sortable="false"
  		class="iconColumn" 
  		headerClass="iconColumn">
  		<c:url value="/PhyloWS/${matrix.namespacedGUID}.nex" var="newMatrixURL"/>
  		<a href="${newMatrixURL}">
  			<img 
  				class="iconButton" 
  				src="<fmt:message key="icons.download.reconstructed"/>" 
  
negative.code: 		sortable="false"
  		class="iconColumn" 
  		headerClass="iconColumn">
  		<c:url var="url" value="${baseURL}${matrix.phyloWSPath}"><c:param name="format">html</c:param></c:url>
  		<a href="${url}">		
  			<img 
  				class="iconButton" 
  