Cool Sliding Effect

Does anyone know where i can learn how to do this or if this is part of Nivo slider?

It does appear to be a version of Nivo, as that’s the only related link I can see on that page. Perhaps it’s been modified? I’m not too familiar with Nivo.

It’s not a part of nivo, it’s just a nice use of some jQuery transitions.
Check out the master.js file.