stick footer to bottom of page regardless of (window height : content height)

gistfile1.txt

$(function(){
            var $footer_position = function(){
                if($(document).height() <= $(window).height()){
                    $('footer').css({'position' : 'absolute',
                                    'bottom' : '0px'
                                    })
                }else{
                    $('footer').css({'position' : 'static'})
                }
            };
 
            $(window).resize(function(){ $footer_position()})
            $footer_position()
});