//滚动图片
  var speed=2
  demoo2.innerHTML=demoo1.innerHTML
  function Marquee(){
  if(demoo2.offsetWidth-demoo.scrollLeft<=0)
  demoo.scrollLeft-=demoo1.offsetWidth
  else{
  demoo.scrollLeft++
  }
  }
  var MyMar=setInterval(Marquee,speed)
  demoo.onmouseover=function() {clearInterval(MyMar)}
  demoo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}