A.  AJAX needs JavaScript and XmlHttpRequest
•Some browsers do not support these technologies
–PDA and mobile phone browsers - no XmlHttpRequest
–Most text browsers and older browsers - no JavaScript
•WCAG requires that all web content works  without JavaScript
•Possible solutions:
–1.  Provide functionality without JavaScript, maybe using NOSCRIPT
–2.  Alternative accessible site that provides an equivalent app
•e.g. Google Mail's basic HTML view
•But these solutions don't afford you the benefits of AJAX
•And it is unlikely that all the same functionality would be supported without AJAX
–e.g. Google Mail settings
•Are there better solutions?