A sense of movement is often the differentiator between Flash-heavy web sites and standards-based sites. Flash interfaces have always seemed more alive—responding to the user’s interactions in a dynamic way that standards-based web sites haven’t been able to replicate.

Lately that’s been changing, of course, with a resurgence in dynamic interface effects, helped along by JavaScript libraries that make it easy—libraries such as Prototype, Scriptaculous, Moo, YUI, MochiKit (and I could go on). It’s high time to revisit the CSS Sprites technique from four years ago, and see if we can’t interject a little bit of movement of our own.

The examples below demonstrate inline CSS Sprites2, the technique we’ll be covering in this article: