Dynamic PHP Image Consolidator 1.0

I've been trying to improve performance on my site by minimizing the number of round-trips to the server to retrieve files. I've found scripts out there to dynamically merge css files and javascript files into a single download, and I wondered if something similar could be done for images...



Interestingly, I accidentally discovered that youtube does exactly this by merging a bunch of their images into a single file, and then dynamically plucking them from this 'image menu' using the css background scroll. Cool, you say? That's what I thought. I threw this script together by merging a variety of other (free) scripts I found on the net.