The blackstone webpage has the following issues for me:
http://us.battle.net/sc2/en/blackstone/

Safari (6.0.2) - Gets to the loading screen and goes no further
Firefox (19.0) - Gets to the loading screen and goes no further
Opera (10.6.3) - The page tries to load and then crashes the browser
Camino - (2.1.2) - The webpage loads and works successfully on this browser. The content loads almost instantly.

So only 1 out of the 4 browsers I use regularly work for this webpage.