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/* adminbuy.cn 做最好的织梦模板 */ #roll_top, #fall, #ct { position: relative; cursor: pointer; height: 72px; width: 26px; } #roll_top { background: url(/skin/images/top.gif) no-repeat; } #fall { background: url(/skin/images/top.gif) no-repeat 0 -80px; } #ct { background: url(/skin/images/top.gif) no-repeat 0 -40px; } #roll { display: block; width: 15px; margin-right: -500px; position: fixed; right: 50%; top: 50%; _margin-right: -505px; _position: absolute; _margin-top: 300px; _top: expression(eval(document.documentElement.scrollTop)); }