Image align (vertical-align not working)

Hi,

I have all my client’s logos here on this site:

http://goo.gl/WNhUJG

I set the height of the div containers to 150px but I need the logos to align in the middle. vertical-align:middle; doesn’t do the trick. I read somewhere that vertical-align only works properly in tables. What can I do?

This is the original site, this is how it should look like: http://goo.gl/ICvLZI

Thanks!