layoutContainer(scrollbar);
  public void paint(Graphics g, JComponent c)  {    layoutContainer(scrollbar);    paintTrack(g, c, getTrackBounds());    paintThumb(g, c, getThumbBounds());    if (trackHighlight == INCREASE_HIGHLIGHT)      paintIncreaseHighlight(g);    else if (trackHighlight == DECREASE_HIGHLIGHT)      paintDecreaseHighlight(g);  }