_id = builder_map[builder];
              DisplayGraph(builder_id + '/' + test, 250, width, true, "TimeSCons-elapsed")
              DisplayGraph(builder_id + '/' + test, 250, width, true, "memory-final")
            }
            document.write('<th valign="center"><a href="' + url + '">'
                           + test_name + '</a></th>');
            document.write('</tr>');
          }
          write_graphs_header_row();
          write_builders_header_row();
          document.write('</table>');
   