var speed3=25//速度数值越大速度越慢
var scroll_demo2 = document.getElementById("demo2");
var scroll_demo1 = document.getElementById("demo1");
var scroll_demo = document.getElementById("demo");
scroll_demo2.innerHTML=scroll_demo1.innerHTML
function Marquee(){
if(scroll_demo2.offsetWidth-scroll_demo.scrollLeft<=0)
scroll_demo.scrollLeft-=scroll_demo1.offsetWidth
else{
scroll_demo.scrollLeft++
}
}
var MyMar=setInterval(Marquee,speed3)
scroll_demo.onmouseover=function() {clearInterval(MyMar)}
scroll_demo.onmouseout=function() {MyMar=setInterval(Marquee,speed3)}