lastScrollY=0;
function heartBeat(){ 
var diffY;
if (document.documentElement && document.documentElement.scrollTop)
    diffY = document.documentElement.scrollTop;
else if (document.body)
    diffY = document.body.scrollTop
else
    {/*Netscape stuff*/}
percent=.1*(diffY-lastScrollY); 
if(percent>0)percent=Math.ceil(percent); 
else percent=Math.floor(percent); 
document.getElementById("full").style.top=parseInt(document.getElementById("full").style.top)+percent+"px";
lastScrollY=lastScrollY+percent; 
}
suspendcode="<div id=\"full\" style='right:15px;POSITION:absolute;TOP:150px;z-index:100'><a href='#top' onclick=\"$('#top').ScrollTo(1500);return false;\"><img src=/images/sl/top.gif border=0 alt='返回顶部'></a><br><a href='tencent://message/?uin=279688638&Site=★在线客服★&Menu=yes'><img src=/images/sl/qq.gif border=0 alt='QQ联系我们'></a><br><a href='mailto:admin@easyrun.com.cn'><img src=/images/sl/email.gif border=0 alt='E-Mail联系我们'></a><br><a href='#end' onclick=\"$('#end').ScrollTo(1500);return false;\"><img src=/images/sl/bottom.gif border=0 alt='跳至底部'></a></div>"
document.write(suspendcode);
window.setInterval("heartBeat()",20);