Medicenter theme Can't close the fancybox/lightbox

Hello,

After looking for hours at different Forums I didn’t find a solution.
I’ve started to work with a Theme called Medicenter, and everythings works fine. Except one thing.

If I click at a picture it should opene a fancybox/lightbox, and the box opens, but there’s no way to close the box again. There is no close button, and if I click at another spot outside the fancybox/lightbox nothing happen either.

I think there is a complication with another .js but i didn’t know how to figure it out or to solve this problem.

Heres the link to the site:
http://goo.gl/O68qcN

For example you can see it right at the Homesite at the Pictures under “Unsere Praxis”

I hope someone have a solution and sorry for the english mistakes i’m from a german speaking country.

mfg
red_eyes