International Sales Contracts: Which Law Applies?

I have put together an “interactive quiz” dealing with international sales law and the application of the Convention on Contracts for the International Sale of Goods (CISG), the U.S. Uniform Commercial Code (UCC) and Canadian Sale of Goods Legislation- unfortunately, WordPress won’t accept the script in a post, so I have posted a link to it. Feel free to try it out and please let me know if you have any comments or suggestions.