How to achieve this slide effect?

[webdevhead]

I would like to know how this slide effect is down on the following site:

http://www.cpeople.ru/

How do they achieve the scroll left/right effect on their portfolio items? I thought it was mootools or similar but can't figure it out.

:(

[Paultbk]

It looks like it was done through Jquery, I just started to learn it and its very worthwile