@namespace url(http://www.w3.org/1999/xhtml);
@-moz-document url-prefix('http://www.tumblr.com/') {

ol#posts li.post.new_post {
background: #ffffff url('http://i53.tinypic.com/zoapmv.jpg') center center no-repeat;}

img[src*="http://assets.tumblr.com/images/new_post_icons_no_labels.png"]{
    width:0;
    height:100px;
    padding-right:250px;
    opacity: 0;}}