Categories side menu works ok in FF but not in other browsers

[BKintera]

Hello everyone,

I have problem with Virtuemart categories side menu.

I have cagtegories "Bojleri, Klimatizacija, Veš mašine, Šporeti" etc. and some subcategories. For example subcategories of category "Bojleri" are: "Termostati, Grejači, Dihtunzi" etc.

When I open category "Bojleri" for example, in firefox I can see subcategories of category "Bojleri" listed in left side menu below category "Bojleri", or when i open some of subcategories of that cagegory i can see other subcotegories of that category in side menu.

But when I'm using Chrome, Opera, Explorer... That doesn't work. If I open some of subcategories, other subcategories from the same category doesn't show.

If I didn't explain my problem very well please check out web site using firefox and any other browser, and try to go from subcategory to subcategory using side menu.

Web site: http://frigonova.rs/rezervni-delovi/bojleri

I'm using VirtueMart 3.0.6.2 and Joomla 3.3.6

And here are the printscreens of my problem:

Firefox:



Opera: