Broken layout in display sub categories

[ayok]

Hi,
I have problem with virtuemart category view. When we click on a category with sub in it, category page will display the subs. However, the page is broken. I got whitespaces on the top and bottom.
Please take a look the site http://www.woonmodern.nl/site/nl/woonkamer/lampen-en-verlichting. The rest of the pages are fine.

Could anyone help me out here?
Thank you,
ayok

[Yannick]

Hey Ayok,

what whitespace do you mean? Maybe you can post a screenshot?