Computer Body Thing

I feel kind of stupid because of  how i'm wording this, but I see this animated body picture thing in so many people's profile pictures and I was wondering how you make them? If anyone knows what i'm talking about.

http://www.mvm.com/en/index.php

have a nice day :]

i also feel stupid for asking this but the website won't load for me.  it keeps timing out.  is the website not compatible with a mac?  is there some kind of setting that i'm blocking?  any ideas?  i'm not very technolgically savvy.