Drop down menu is not working on Blackberry

Hi Aigars,
I’m having a problem with the drop down menus when viewed on phones (like my blackberry). They don’t drop down and we cannot navigate to the other pages. Is there something we can do to fix this?

Unfortunately I have no idea how blackberry browser works.
I am sure that it works on Windows Phone, iPhone, iPad and any Android phone with Android 2.3+, Mac, Windows, Linux, so 99.999% of visitors will see your website properly.