#ad-banner-ga25{background:#000 url("/img/g17/ga25/banner.jpg") no-repeat top left;height:75px;position:relative;top:-20px;margin-bottom:5px}#ad-300x250-ga25{display:block;background:#000 url("/img/g17/ga25/bigbox.jpg") no-repeat top left;width:300px;height:250px}