anchor.diff:  			   cellpadding="3">
   
   	<display:column title="ID">
  -		<c:url value="matrix.html" var="matrixURL">
  -			<c:param name="id">${study.id}</c:param>
  -			<c:param name="matrixid">${matrix.id}</c:param>
  -		</c:url>
  -		<a href="${matrixURL}">M${matrix.id }</a>
  +		<c:url var="url" value="${baseURL}${matrix.phyloWSPath}"><c:param name="format">html</c:param></c:url>
  +		<a href="${url}">${matrix.treebaseIDString}</a>
   	</display:column>
   	
   	<display:column  
  
positive.code: 		sortable="false"
  		class="iconColumn" 
  		headerClass="iconColumn">
  		<c:url var="url" value="/PhyloWS/${matrix.namespacedGUID}.html"/>
  		<a href="${url}">		
  			<img 
  				class="iconButton" 
  
negative.code: 		sortable="false"
  		class="iconColumn" 
  		headerClass="iconColumn">
  		<c:url var="url" value="${baseURL}${matrix.phyloWSPath}"><c:param name="format">nexus</c:param></c:url>
  		<a href="${url}">
  			<img 
  				class="iconButton" 
  				src="<fmt:message key="icons.download.reconstructed"/>" 
  