XHTML 2 demonstrated
Sjoerd Visscher has published an XHTML 2.0 page that works in IE6, Mozilla and Opera, complete with support for navigation lists and
href attributes on multiple elements. The implementation is very clever—it uses IE behaviors, Mozilla XBL files and Opera’s proprietary link CSS properties to get all three browsers to play nicely (be sure to check out the style sheet). A custom DOCTYPE at the top of the page adds DTD descriptions of the new XHTML 2.0 elements used in the document.