.backToTop { display: none; width:35px; line-height: 1.2; padding: 5px 0; background-color: #000; color: #fff; font-size: 12px; text-align: center; position: fixed; _position: absolute; right:20px; bottom: 100px; _bottom: "auto"; cursor: pointer; opacity: .6; filter:Alpha(opacity=60);}