public void showPanTip()
    {
        String tipText = null;
        Point upperLeft = new Point(0, 0);
        JViewport vp = getEnclosingViewport();
        if (!isPannableUnbounded() && vp != null)
            upperLeft = vp.getViewPosition();
        Location loc = locationForPoint(upperLeft);
        if (loc != null)
            tipText = getToolTipText(loc);

        //showTip(tipText, getLocation());
    }