I have a PSD with a web design.
Every time I tweak the design, I need to manually copy different portions of the image, with different layer visibilities (for transparency) into CSS sprites.
How much can that be automated?
I used an automatic photoshop script once and worked well.
The concept is :
The script does :
In your case, if you modify one image, you regenerate the global image and the CSS via the script and... that's it. Maybe you'll need to copy/paste the CSS in yours if you don't want to use the generated one.
I tried it with a few files and worked great. Then, I tried like ~600 pictures and then, you'll need a goooood CPU and patience ;) In this case, don't use it.