[TYPO3-english] Backend Module menu as dropdown??

[Stig Nørgaard Færch]

TypoConsult in Denmark has site called typotry.dk where you can try out 
TYPO3 for free.
They have a different backend layout than the default.
The Module Menu is in the top bar as drop down instead.
Does anyone here know if that is a setting or an extension - or maybe 
it's not something which is publicly available?
I know that they use modern_skin.

Thanks in advance.

/Stig