W3C:

2008-08-06: The Protocols and Formats Working Group published an updated Working Draft of Accessible Rich Internet Applications (WAI-ARIA). WAI-ARIA defines a way to make Web content and Web applications more accessible to people with disabilities. It especially helps with dynamic content and advanced user interface controls developed with Ajax, HTML, JavaScript, and related technologies. WAI-ARIA is introduced in the WAI-ARIA Overview and the WAI-ARIA FAQ. Read the updated WAI-ARIA Specification announcement that requests feedback on host language embedding, and about the Web Accessibility Initiative. (Permalink)