anchor.diff:  
       function searchTree(ontology_node_id, ontology_display_name) {
           var handleBuildTreeSuccess = function(o) {
  -        //showPageRenderingAction();
           var respTxt = o.responseText;
           var respObj = eval('(' + respTxt + ')');
           if ( typeof(respObj) != "undefined") {
  
positive.code:                 showNoPathFoundStatus();
              }
              else {
  
                showPartialHierarchy();
  
                for (var i=0; i < respObj.root_nodes.length; i++) {
                  var nodeInfo = respObj.root_nodes[i];
                  addTreeBranch(ontology_node_id, root, nodeInfo);
  
negative.code:       rootDescDiv.render();
      }
  
  
      function showPageRenderingAction() {
        rootDescDiv.setBody("<span class='instruction_text'>(Note: This tree only shows partial hierarchy.)</span>");
        rootDescDiv.show();
        rootDescDiv.render();
      }
  