Hi Stephen,
Sorry for my english language, I'm a french IT educational consultant here in Québec...so forgive me ;-)
When I saw your question this morning, I went to your proposed URL. I tried this:
1. Opened the URL and choose one of the simulation ( I chose one to translate in french ;-) )
2. With Google Chrome I saved the page on my laptop. Google Chrome save the page and the files related to it (for example, a couple of .js files)
3. I opened it on Chrome and it worked. There's still some connections on the original site but the most part of it is stored locally.
4. I translated the HTML page to French and everything worked great.
So, if you save the files and tried to insert it in your app I think it might work.
Good luck,
Pierre