[Plugin: NextGEN Gallery] How can I put the rectangular photos in a square box?

Hi!

Before all, I’m enjoying the plugin, thank you!

The photos I’m putting in my side are 4:3 rectangular photo, some photo orientated landscape, some other portrait.

The thumbnails I generate have a maximum of 145×145, but in the picture list they are shown in an ugly manner.

I’d want to show the thumbnails in the pictures list so that each thumbnail get enclosed in a square box. This way all thumbnails would be put in an ordered manner.

Is there a simple way to do this modifying css?

By the way, I tryed, but without success.