For the last several years, there has been a quiet revolution taking place in web application development. In fact, it was so quiet that until February 2005, this revolution didn’t have a name, even among the revolutionaries them selves. Actually, beyond the odd mention of phrases such as XMLHttpRequest object,XML,or SOAP,developers didn’t really talk about it much at all, prob ably out of some fear of being burned for meddling in unnatural forces. But now that the cat is out of the bag, there is no reason not to show how Ajax works