Anchoring MCs to browser window

I found a tutorial on how to do this a year ago, but now the site is gone and I cant find how to do this anywhere.

I need to make the navigation, and logo on a site anchor to the bottom of the browser window, one in each corner…

http://www.foxriders.com/us/en/fox/

like that.

No matter how small or large the browser is, they stay anchored in the corners…

Anyone know how to do this, or know anywhere with a tutorial?

Id appreciate the help.