<script>
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function goTopEx(){
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var obj=document.getElementById("goTopBtn");
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function getScrollTop(){
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return document.documentElement.scrollTop;
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}
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function setScrollTop(value){
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document.documentElement.scrollTop=value;
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}
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window.onscroll=function(){getScrollTop()>0?obj.style.display="":obj.style.display="none";}
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obj.onclick=function(){
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var goTop=setInterval(scrollMove,10);
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function scrollMove(){
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setScrollTop(getScrollTop()/1.1);
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if(getScrollTop()<1)clearInterval(goTop);
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}
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}
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}
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</script>
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<div class="clear"></div>
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<div id="goTopBtn" class="png none" ><img border=0 src="{yun:}$style{/yun}/images/lanren_top.png" class="png"></div>
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<script type=text/javascript>goTopEx();</script>
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<style>
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#goTopBtn {
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POSITION: fixed;
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TEXT-ALIGN: center;
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WIDTH: 47px;
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BOTTOM:3px;
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HEIGHT: 78px;
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FONT-SIZE: 12px;
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CURSOR: pointer;
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RIGHT: 40px;
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_position: absolute;
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_right: 40;
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_position:absolute;
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_bottom:auto;
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_top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||15)-(parseInt(this.currentStyle.marginBottom,10)||15)));
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_background:url({yun:}$style{/yun}/images/lanren_top.png) no-repeat
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}
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*html{
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background-image:url(about:blank);
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background-attachment:fixed;
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}
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</style>
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