[Plugin: NextGEN Gallery] Appears strangely…

Hello, I am using this plugin and I really like it, but when I upload pictures in different shapes, the gallery always appears strangely…

Maybe you can understand what I’m talkin about by taking a look at this gallery at my web page:

http://www.korfubolti.net/?p=14729

Tanks in advance, Adam 🙂

http://wordpress.org/extend/plugins/nextgen-gallery/