div.ad { cursor: pointer; border: 0 solid white; padding: 0; margin: 3px 0; background-color: rgb(153,153,153); }
div.banner      { width: 572px; height:  75px; }
div.button      { width: 150px; height: 150px; }
div.ear         { width: 150px; height:  80px; }
div.skyscraper  { width: 150px; height: 600px; }