John Grubber predicted correctly on iTunes 9 using WebKit to render the ui. Will Norris managed to retrieve the Rock page and reconstruct and host them after some fix. The “Quick View” for each album however does not work.

As you can see the iTunes store is a hidden website that can only be accessed by iTunes itself, which uses WebKit to render all the pages. It uses the many proposed css 3 declaration which have the prefix -webkit- like -webkit-mask-box-image & webkit-gradient which is used in this site. Once uncompressed the css contains 7858 lines of code, weighing a hefty 254 kb in size.