Having som insight into web technology through work I see two possibillities:
1. The content management system / administrator did a huge error and ****s up the index.html page by not closing the meta tag correctly. In other words there is no body tag on page which results in that there is nothing to see.
2. The above suggestion is not so likely. Even with a childs understandig of HTML or CSS you would include the body tag and you would never leave out the actual content.
The page is probably hacked. 
More interesting is that every other page on the site works fine. But the page with bulletins and news is down. Time to upgrade the admin password to something that resembles to 16 or 32 bit encryption.
