CSS3 Transition - a simple slider demo (grenlibre.fr)

So, basically, you have a main css class with "transition-duration: 1.5s;", another class with left: -275px; and after you change to a class with left: 0px; and it animates itself without javascript (it is used only to change classes).

That's cool, exited about new CSS features, wish they did added these earlier..

And it reminds me a bit about Adobe Flash IDE, you can do animations without actionscript just by using their IDE.

Great degradation (meaning that the animation doesn't work in my current latest-but-non-beta FF 3.6.3, but the hard image switching still does).