popupTrigger = false;
    public void mouseReleased(MouseEvent me)     {        if (me.isPopupTrigger()) model.setPopupPoint(me.getPoint());        else {            Object src = me.getSource();            ImageDisplay d = findParentDisplay(src);            if (d instanceof ImageNode && !(d.getTitleBar() == src))                model.setThumbSelected(true);        }    }