var speed=30
            var MyMar=setInterval(Marquee,speed)
            document.getElementById('demo2').innerHTML=document.getElementById('demo1').innerHTML
            document.getElementById('demo').onmouseover=function() {clearInterval(MyMar)}
            document.getElementById('demo').onmouseout=function() {MyMar=setInterval(Marquee,speed)}
            function Marquee(){
            if(document.getElementById('demo2').offsetWidth-document.getElementById('demo').scrollLeft<=0)
               document.getElementById('demo').scrollLeft-=document.getElementById('demo1').offsetWidth
            else{
               document.getElementById('demo').scrollLeft++
            }
            }