WoWhead.com is not working for me

I have the same issue as OP.

When I visit the main page: www.wowhead.com I get a semi working version, it shows pictures and html but seems to lack functionality.

Basically I can't search or find anything.

http://postimage.org/image/wcwhgshah/

It works when I'm home but not at work. There are no restrictions in our firewall or anything.

I have tried three different browsers, reinstalled java, also it's the same issue for my colleague.

Any help is appreciated,

Ty