What is this type of Scrollbar Called?

[cbaur09]

Hi,
Could someone go to the following website, and click on the "live" page (sorry there is no direct link to the page) and tell me what kind of scroll bar is on this page:

http://www.scottmatthewsmusic.co.uk/

is this an inline frame of sorts? I use dreamweaver and am trying to figure out how I could put this on my site.

Thanks, any thoughts would be appreciated,
Chris