This is a good (although old) article on CSS Transitions. Especially the following caught my attention:

You can even add an event listener to detect when the transition has finished:

aLink.addEventListener("transitionend", function(){<br /> console.log("Transition Done!");<br /> }, true);

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aLink.addEventListener("transitionend", function(){<br /> console.log("Transition Done!");<br /> }, true);

I haven’t read anything about this in any of the other bazillion articles about CSS transitions that is out on the web. Sound interesting to me.