code: function startDragMode(mode, pos, touch) //{{{
      {
        docOffset = getPos($img);
        Tracker.setCursor(mode === 'move' ? mode : mode + '-resize');
  
        if (mode === 'move') {
          return Tracker.activateHandlers(createMover(pos), doneSelect, touch);
        }
  
        var fc = Coords.getFixed();
        var opp = oppLockCorner(mode);
        var opc = Coords.getCorner(oppLockCorner(opp));
  
        Coords.setPressed(Coords.getCorner(opp));
        Coords.setCurrent(opc);
  
        Tracker.activateHandlers(dragmodeHandler(mode, fc), doneSelect, touch);
      }
docs: }}}