No more tedious copying & pasting to your CSS when adding or
changing CSS sprites in your designs!
SmartSprites fully automatically maintains CSS sprites in your designs.
It parses special directives you can insert into your original
CSS to mark individual images to be turned into sprites. It then builds sprite
images from the collected images and automatically inserts the required CSS
properties into your style sheet, so that the sprites are used instead of the
individual images.
Full description, documentation and examples on: http://csssprites.org