<html><head><script type="text/javascript">var currentPositiontimer;function GoTop(){timer=setInterval("runToTop()");}function runToTop(){currentPosition=documentdocumentElementscrollTop || documentbodyscrollTop; currentPosition=;if(currentPosition>){windowscrollTo(currentPosition);}else{windowscrollTo();clearInterval(timer);}}</script><style type="text/css"></style></head><body><div style="height:px;textalign:center;fontsize:px;fontweight:bold;">饭</div><div style="height:px;textalign:center;fontsize:px;fontweight:bold;">吃</div><div style="height:px;textalign:center;fontsize:px;fontweight:bold;">家</div><div style="height:px;textalign:center;fontsize:px;fontweight:bold;">回</div><div style="height:px;textalign:center;fontsize:px;fontweight:bold;">你</div><div style="height:px;textalign:center;fontsize:px;fontweight:bold;">带</div><div id="backup" onclick="GoTop()" style="border:px solid red;height:px;width:px;position:fixed;cursor:pointer;right:px;bottom:px;">返回顶部</div><script>windowscrollTo(documentbodyscrollHeight);</script></body></html>
