Login and Register in header

I want to add Login and Register Links in the bottom right of the header, and when people are logged in I want them to switch to Logoff and Account. The images in the link below show what I am trying to do. https://onedrive.live.com/redir?resid=2FE0501005AE90C8!4551&authkey=!AAVFFwj3QnfqAZk&v=3&ithint=photo%2c.jpg