anchor.diff:  .contribution_version_selector_box {
       padding: 0.6em 0.5em 0.4em 0.5em;
       border-width: 0 0 1px 0;
  -    //background-image: url('../images/box-bg1.png');
       background-position: top;
       background-repeat: repeat-x;
       background-color: #fffeda;
  
positive.code: 
  div.collapsable_div_header {
    margin: 0; 
    background-image: url('../images/header-bg.png');
    background-position: top;
    background-repeat: repeat-x;
    background-color: #eee;
  
negative.code: 
  #topbar {
      height: 20px;
      background-image: url("<%= asset_path('searchfade-repeat.png') %>");
      background-repeat: repeat-x;
      background-position: top center;
      padding: 10px 0;
  