Using proven examples and explaining concepts step by step, this book shows you how building Ajax-enabled sites and applications allows more interactive user interfaces than ever before. You ll learn about the differences in capabilities between client-side and server-side development techniques, as well as how Ajax crosses this boundary. You ll also discover how Ajax techniques can be summed up by patterns (which are development models that you ll use repeatedly). With a mastery of these techniques, you ll be able to breathe new life into your Web sites.