display favicon in pseudo element

i.html

<a href=http://github.com>GitHub</a>

s.js

function getDomain(url) {
   return url.match(/:\/\/(.[^/]+)/)[1];
}

$("a[href^='http']").each(function() {
    $(this).css({
        background: "url(http://www.google.com/s2/u/0/favicons?domain=" + getDomain(this.href) + 
        ") left center no-repeat",
        "padding-left": "20px"
    });    
});
​

from http://jsfiddle.net/chriscoyier/6Vg7t/3/