void CTextViewer::scrollUp()
{
	if( m_scrollpos > 0 )
	{
		m_scrollpos-=4;
	}
	else
	{
		if( m_linepos > 0 )
		{
			m_scrollpos = m_8x8tileheight;
			setPrevPos();
		}
	}
}
	void setPos(int*& p) { 
		setPrevPos(pos);	// store previous position
		pos[0] = p[0];
		pos[1] = p[1];
	}