$(document).ready(function() { 
$(".su_badge").each(function() { $(this).replaceWith(
"<iframe src=\"http:\/\/www.stumbleupon.com\/badge\/embed\/2\/?url="+$(this).attr('href')+"\" scrolling=\"no\" frameborder=\"0\" style=\"border:none; overflow:hidden; width:65px; height: 18px;\" allowTransparency=\"true\"><\/iframe>"
) } );
});