Manipulating Psedo Element

HTML

<div>Text</div>
<style id="replaceable">    
</style>

CSS

div {
    display: block;
}

JavaScript

var css = '.image:after { content: url("https://www.google.com/images/srpr/logo3w.png");  width: 400px; height: 100px; }';

$("#replaceable").html(css);
$("div").addClass('image');

$("div").click(function() {
    var css = '.image:after { content: url("http://www.google.com/logos/2012/elias_lonnrot-2012-hp.jpg");  width: 400px; height: 100px; }';
    $("#replaceable").html(css);
});