Is this site yours? Some comments about the format: It's difficult to navigate because it has a javascript menu that doesn't appear in the translation. Even in the non translated page, if you click in the wrong place you get an error page with a message:
> Lieber Besucher. diese Seite ist leer und besteht nur aus technischen Gründen. Die passenden Dokumente dieser Rubik findest du links im Menü, wie z. Bsp. :
> [autotranslation] Dear visitor. this page is empty and exists only for technical reasons. The matching documents of this Rubik you can find in the left menu, such as Ex..:
I think that it's annoying for non technical users. You should at least replace it with something like the items in the respective dropdown menu.
PS: If you remove the "&hl=de" from the Google Translator URL, each user gets the UI in whatever language Google thinks is better, instead of German. I get Spanish because I live in Argentina. https://translate.google.de/translate?sl=de&tl=en&js=y&prev=...
