vertical.setVisibleAmount(visibleLines);
	public void updateScrollBars()	{		if(vertical != null)		{			vertical.setValue(firstLine);			vertical.setVisibleAmount(visibleLines);			vertical.setBlockIncrement(visibleLines);			vertical.setMinimum(0);			vertical.setMaximum(model.getLineCount());		}		if(horizontal != null)		{			horizontal.setValue(-horizontalOffset);			horizontal.setVisibleAmount(getSize().width);			horizontal.setUnitIncrement(10);			horizontal.setBlockIncrement(50);			horizontal.setMinimum(0);			horizontal.setMaximum(longestLine);		}	}