You might as well go to the source if you are reading up on patterns: http://www.amazon.com/gp/product/0195019199/102-7042366-5688915?v=glance &n=283155&n=507846&s=books&v=glance - - - - - - - - - - - - Tim Beynart Athens, GA, USA - - - - - - - - - - - -