document.write('
1 月 9 日
'); var rollspeed=50 rolllink2.innerHTML=rolllink1.innerHTML //克隆rolllink1为rolllink2 function Marquee(){ if(rolllink2.offsetTop-rolllink.scrollTop<=0) //当滚动至rolllink1与rolllink2交界时 rolllink.scrollTop-=rolllink1.offsetHeight //rolllink跳到最顶端 else{ rolllink.scrollTop++ } } var MyMar=setInterval(Marquee,rollspeed) //设置定时器 rolllink.onmouseover=function() {clearInterval(MyMar)}//鼠标移上时清除定时器达到滚动停止的目的 rolllink.onmouseout=function() {MyMar=setInterval(Marquee,rollspeed)}//鼠标移开时重设定时器