vertical.setUnitIncrement(1);
vertical.setUnitIncrement(2);
	public void updateScrollBars()	{		if(vertical != null && visibleLines != 0)		{			vertical.setValues(firstLine,visibleLines,0,getLineCount());			vertical.setUnitIncrement(1);			vertical.setBlockIncrement(visibleLines);		}		int width = painter.getWidth();		if(horizontal != null && width != 0)		{			horizontal.setValues(-horizontalOffset,width,0,width * 5);			horizontal.setUnitIncrement(painter.getFontMetrics()				.charWidth('w'));			horizontal.setBlockIncrement(width / 2);		}	}