var speed3x=25//速度数值越大速度越慢
demo2x.innerHTML=demo1x.innerHTML
function Marquee2x(){
if(demo2x.offsetWidth-demox.scrollLeft<=0)
demox.scrollLeft-=demo1x.offsetWidth
else{
demox.scrollLeft++
}
}
var MyMarx=setInterval(Marquee2x,speed3x)
demox.onmouseover=function() {clearInterval(MyMarx)}
demox.onmouseout=function() {MyMarx=setInterval(Marquee2x,speed3x)}