private void repaintFocus() {
		Rectangle bounds = getVisibleRect();
		int x = bounds.x;
		int y = bounds.y;
		int w = bounds.width;
		int h = bounds.height;
		paintImmediately(x, y, w, 1);
		paintImmediately(x, y, 1, h);
		paintImmediately(x + w - 1, y, 1, h);
		paintImmediately(x, y + h - 1, w, 1);
	}