/*·µ»Ø¶¥²¿*/
.returnTop { position:fixed; _position:absolute; right:50px; bottom:100px; _bottom:auto; display:none; width:40px; height:40px; border:1px solid #a8a8a8; border-radius:4px; background:#fff; box-shadow:0 0 5px #F5F5F5; text-indent:-9999px; cursor:pointer; }
.returnTop .s{ position:absolute; top:-2px; _top:-20px; left:10px; width:0; height:0; border-width:10px; border-color:transparent transparent #a8a8a8; border-style:dashed dashed solid;}
.returnTop .b{ position:absolute; top:18px; left:16px; height:12px; width:8px; background:#a8a8a8; }