var speed3=25//速度数值越大速度越慢

demo333.innerHTML=demo222.innerHTML

function Marquee(){

if(demo333.offsetWidth-demo111.scrollLeft<=0)

demo111.scrollLeft-=demo222.offsetWidth

else{

demo111.scrollLeft++

}

}

var MyMar=setInterval(Marquee,speed3)

demo111.onmouseover=function() {clearInterval(MyMar)}

demo111.onmouseout=function() {MyMar=setInterval(Marquee,speed3)}