h;
            while (l > last_track_cnt) host.deleteRow(--l);
          }
        }
      break;
      case "TRACK":
        if (tok.length > 5) {
          var host = document.getElementById("tracks");
          var tidx = parseInt(tok[1]);
          if (host && tidx < 200) {
            var addtop = host.rows.length;
            while (addtop <= tidx) {
              var row = host.insertRow(addtop);
              last_titles[addtop]=null;
              last_flags[addtop]=null;
              last_vols[ad