I'm glad to see this. I for one am looking forward to the day when javascript is at the point where it offers a level of programing ease for animations, etc, that you get with flash. (It may have happened already, last time I did lingo programming it was called lingo, and I am not conversant with the state of the art in javascript.)
Or it seems that CSS is supporting animations and maybe that is a better choice over javascript? (because the browser, I presume, can optimize CSS a lot easier than javascript which can have arbitrary functionality.)