FACEBOOK SHORT CUTS

Alt+1 : Return to Home
Alt+2 : To view the Wall tab
Alt+3 : To pull down the Friends Requests list
Alt+4 : To retrieve the Messages list
Alt+5 : To call out the Notification list
Alt+6 : Account setting page
Alt+7 : Account privacy configuration.
Alt+8 : Facebook fans group page
Alt+9 : Facebook’s Statement of Rights and Responsibilities
Alt+0 : Facebook Help Centre
Alt+m : Create new message
Alt+? : Cursor in the Search Box

So please refer below for your specific browser:

Google Chrome: Alt + #
Internet Explorer : Alt + #, then Enter
Firefox : Shift + Alt + #
Mac OS : Ctrl + Opt + #