Accessibility of XmlHttpRequest
•For XmlHttpRequest based scripts to be accessible, they need to at least:
–1.  Allow graceful degradation with JavaScript disabled
•i.e. use server side methods when JS is not supported
–2.  Have a way to notify which parts of the page has changed.
•e.g. "message area / key area" that lists what has changed on a page - much like a history log. accessible via an accesskey and/or high up on the tab order, and/or via skip links
•e.g. Consider using DOM methods to write out the content instead of inner HTML.  AT such as screen readers should be able to access the DOM (e.g. through MSAA) - but AT vendors need to build in this capability
•Also relates to usability of XmlHttpRequest …