var demo = document.getElementById("demo");
    var demo1 = document.getElementById("demo1");
    var demo2 = document.getElementById("demo2");
    var speed=20;    
    demo2.innerHTML = demo1.innerHTML    
    function Marquee(){
        if(demo.scrollLeft<=0)   
	        demo.scrollLeft+=demo2.offsetWidth
	    else{  
	        demo.scrollLeft--  
	    }  
    }
    var MyMar = setInterval(Marquee,speed);  
    demo.onmouseover = function(){clearInterval(MyMar)}    
    demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)}