AjaxLine

CSS sprites is one of the most useful CSS techniques. You can read the new tutorial aboout it posted on the Lightpost Creative site. Here's small excerpt from it:

One of the good things about CSS is that there are always different ways to complete a certain task. Wether it be getting your background to display correctly with a pattern or getting nice rollovers on your buttons. We will talk about the latter today, or whatever day you read this counts too. We are going to follow this step by step tutorial (which hopefully makes sense to more than just me) to recreate the list of social media buttons in the footer of our site.

Source:Lightpost Creative.