http://www.macrumors.com/2009/02/06/css-animation-coming-to-safari-already-in-iphone-less-dependence-on-flash/
(unless you have an iphone/ipod touch or a recent build of Webkit, the links will be pretty boring.)
CSS Animations is one of the enhancements to CSS proposed by the WebKit project that we’ve been calling CSS Effects (eg. gradients, masks, transitions). The goal is to provide properties that allow Web developers to create graphically rich content. In many cases animations are presentational, and therefore belong in the styling system. This allows developers to write declarative rules for animations, replacing lots of hard-to-maintain animation code in JavaScript.
(unless you have an iphone/ipod touch or a recent build of Webkit, the links will be pretty boring.)