Help with a JPG URL

Factual Questions
1

I got some photos developed and I put them on the internet via the Kodak Picture Center site.

It gives you a URL like

http://picturecenter.kodak.com/image/1234567890_560.jpg (Fake url for illistration purposes)

I was playing around and I found if I change the _560 to like _100 it shrinks the picture. And I can change it to _250 it resizes it again.

I can also put something at the end of the URL like DropShadow=110 and it gave a border to the picture.

My question is can anyone point me to a website that can give me the codes to this. I’ve been playing with the URL and the only one I got to work was the Dropshadow (other than getting it to resize)

Thanks