anchor.diff:  
           showTreeLoadingStatus();
           var ontology_source = null;
  -        var ontology_version = "11.09d"; //DYEE
  +        var ontology_version = document.forms["pg_form"].ontology_version.value;
           var request = YAHOO.util.Connect.asyncRequest('GET','/ncitbrowser/ajax?action=build_tree&ontology_node_id=' +ontology_node_id+'&ontology_display_name='+ontology_display_name+'&version='+ontology_version+'&ontology_source='+ontology_source,buildTreeCallback);
         }
       }
  
positive.code:         failure:responseFailure
        };
  
        var ontology_display_name = "NCI Thesaurus"; //DYEE
        var ontology_version = "11.09d"; //DYEE
        var cObj = YAHOO.util.Connect.asyncRequest('GET','/ncitbrowser/ajax?action=expand_tree&ontology_node_id=' +id+'&ontology_display_name='+ontology_display_name+'&version='+ontology_version,callback);
      }
  
  
negative.code:     function initTree() {
  
        tree = new YAHOO.widget.TreeView("treecontainer");
        var ontology_node_id = document.forms["pg_form"].ontology_node_id.value;
        var ontology_display_name = document.forms["pg_form"].ontology_display_name.value;
  
        if (ontology_node_id == null || ontology_node_id == "null")
        {
  