Zoomed photos

Hi,
on the website which I’m trying to set:
http://biuroarchitektoniczne.eu/projekty-i-realizacje/biurowe/

in the project categoty, photos are zoomed. If you want to see the rest of the photo, you can only slide them downy with red bar on the right. What do I have to change or add to settings to see full photo without scroling?
I’m using Simple Image Size plugin.

Thanks for help.

The page I need help with: [log in to see the link]