自定义博客园---返回顶部

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     bottom: 10px;
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#back-top span {
     width: 50px;
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     display: block;
     background:url(http://images.cnblogs.com/cnblogs_com/seanshao/855033/o_rocket.png) no-repeat center center;
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#back-top a{outline:none}
</style>
<script type="text/javascript">
$(function() {
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</script>
<p id="back-top" style="display:none"><a href="#top"><span></span></a></p>