[Solved] Categor item always open

[osit]

Hi,

I don't know why but in category block first category with subcategories opens when it shouldn't.

The structure looks like this
cat1
cat2
-sub1
-sub2
cat3
cat4
-sub1
-sub2
cat5
-sub1
-sub2
of course when starting all cats all closed

When cat1 is clicked it highlights.
When cat2 is clicked it highlights and opens.
When cat3..5 is clicked it highlights and opens (if has subs) but cat2 is also still opened.

what can I do to keep cat2 closed when it's not selected

EDIT:
I found where is problem.
I used modification from http://www.prestashop.com/forums/viewthread/75131/
I undid it. It's ok

[osit]

Anybody had same problem? It's really important to me.
I'll be grateful for any clues