public void addScrollbarsToAvailSpace(Dimension availSpace) {
		// if a vertical scrollbar is showing ...
		JScrollBar scrollbar = Outliner.jsp.getVerticalScrollBar();
		if (scrollbar.isVisible()) {
			availSpace.width += scrollbar.getWidth();
		}
		
		// if a horizontal scrollbar is showing ...
		scrollbar = Outliner.jsp.getHorizontalScrollBar();
		if (scrollbar.isVisible()) {
			availSpace.height += scrollbar.getHeight();
		}
	}