Making a footer not rise above the bottom of the screen without extraneous markup

Question

If you only had to worry about Firefox and Webkit browsers, what CSS would you use to make the footer in the following HTML not rise above the bottom or the screen (and go lower

Answer 1

Given the requirements of no extra markup and not caring about IE (does work in IE8), I present this solution (which does require the use of a fixed height header). I did have to use float rather than display: inline-block as my Safari 4.0 did not display it with min-height for this solution:

HTML is just:

    
Header
    
Article
    
Aside
    
Footer