Pictures do not resize

Hello all,

I have a question that I did not find on this or any other page so please help me.

I have problems with images for products on products view site and product detail view. When browser size changes all resize automaticlly but picture for product stay the same size.

So far I have change the size of thumbnails to little bigger so when browser is at full page thumbnails are big. But when size of browser is only for half of screen everything gets smaller (containers for products) but picture stay the same so it gets out of borders/container.

When I am in category view picture for category resize automatically but images for products does not resize.

I am not good at english and I am even worst at webpage making and so on. I have googled and learned for a week now and I have learned something but this is out of my league.

Thanks for any help.

Best regards, Bumbar