> I wanna know about how much firefox supports XML, SMIL,
> TIME and what is going on about these support in firefox.
XML support has been there for a long time, with XHTML, MathML, SVG
support. I think SMIL in SVG is already available in the Firefox 4 beta
releases, for instance
http://www.w3.org/TR/SVG11/images/animate/anim01.svg is animated for me
here with Mozilla/5.0 (Windows NT 5.1; rv:2.0b5pre) Gecko/20100826