The folks at webkit.org are adopting animation support that has been present in mobile Safari since iPhone 2.0. They are also proposing specs for CSS-based transforms, transitions, and animations:
See some animations in action using the latest nightly WebKit at:
Firefox 3.1 is also adopting WebKit’s proposal for supporting transforms too:
And of course there is also the cryptic filters that IE supports for transforms:
It will be nice to have all of these varying implementations conform to a standard.