var speed=80 
demo2.innerHTML=demo1.innerHTML   
function Marquee() {   
    if(demo2.offsetWidth-demo.scrollLeft<=0)   
        demo.scrollLeft-=demo1.offsetWidth  
    else  
    {   
        demo.scrollLeft +=2;   
    }   
}   
  
function Marqueeright() {   
    if (demo.scrollLeft <= 0) {   
        demo.scrollLeft += demo2.offsetWidth;   
    }   
    else {   
        demo.scrollLeft -=2;   
    }   
}   
  
var MyMar=setInterval(Marquee,speed)   
demo.onmouseover=function() {clearInterval(MyMar)}   
demo.onmouseout = function() { MyMar = setInterval(Marquee, speed) }   
  
function GoRight() {   
    clearInterval(MyMar);   
    MyMar = setInterval(Marqueeright, speed)   
}   
function GoLeft() {   
    clearInterval(MyMar);   
    MyMar = setInterval(Marquee, speed)
}