Documentation of Qt 4.8 from Qt 5.0 page not accessible

With initialization of the Qt documentation some things are mixed up.
When open "Doc" on qt-project.org I would expect to see the Qt 5.0 documentation. However, this opens Qt 4.7 documentation.

The actual problem is that having Qt 5.0 documentation open, one cannot change to Qt 4.8 documentation with the select version combo box.
A 404 error page is shown. The same for trying to open Qt 4.7 docs.

Going going back to "Doc" and selecting version 4.8 on the Qt 4.7 page is possible.