Study on AJAX

adaptive path ? ajax: a new approach to web applications
I should really read more as Raymond told me about a combination of technologies that can simulate the effect of Flex in plain HTML environment.
AJAX: Asynchronous Javascript & XMLHttpRequest
The following as some of the references I have read through:
http://www.webpasties.com/xmlHttpRequest/
http://www.adaptivepath.com/publications/essays/
archives/000385.php
http://en.wikipedia.org/wiki/AJAX
http://www.fiftyfoureleven.com/resources/
programming/xmlhttprequest/examples