I don't think it's a CMS. The link you gave goes to a Flash site. It would seem it's more of a page that just queries general info and displays it. Doesn't seem like much of the CMS backend is there, especially since it's mainly created in Flash (you'll notice 3 different flash movies) which can be altered off-site, uploaded, and the site is "updated". Of course, it could be a CMS, but I'd doubt it.
If you want to do a CMS for yourself, you should probably just google for CMS tutorial. DevShed should have one if we don't. It's not hard to create a CMS, it's just time consuming. If you don't know what you're doing with databases, PHP, and validation, it could be a tough task. If you're looking to learn PHP from this, I'd suggest you find a project someone else started (that is open-source) and you see if you can make modifications. Get a feel for how things work, and then try and stem from there. It's how I started.
CMS Tutorials
Creating a PHP-Based CMS
~Brett