<quote>
Ajax or Asynchronous JavaScript and XML is a term describing a web
development technique for creating interactive web applications using a
combination of:
a.. HTML (or XHTML) and CSS for presenting information
b.. The Document Object Model manipulated through JavaScript to
dynamically display and interact with the information presented
c.. The XMLHttpRequest object to exchange data asynchronously with the web
server. (XML is commonly used, although any text format will work, including
preformatted HTML, plain text, and JSON)
Like DHTML, LAMP, or SPA, Ajax is not a technology in itself, but a term
that refers to the use of a group of technologies together. In fact,
derivative/composite technologies based substantially upon Ajax, such as
AFLAX are already appearing.
</quote>
Full entry here...
http://en.wikipedia.org/wiki/AJAX
Google is your friend.
--
Regards,
Tim Haughton
Agitek
http://agitek.co.uk http://blogitek.com/timhaughton