I have a strange problem with a pull-down menu.

On one page it works just fine, on the other the same menu (only with
another language) does not work and gives me a javascript error!

Could you please check and help me?!

Here is the problem page:


There are TWO pull-down menues, one on the top right that says "Scegliere
località" and another on the left below the nav-bar that says: "Vai a...".

Both do NOT work!!

But I have the same menues at the German page at:


and they work just fine!

WHERE is my error??

I cannot find any error not even inside the code.