var speed=100;
        var tab = document.getElementById("demod");
        var tab1 = document.getElementById("demo1d");
        var tab2 = document.getElementById("demo2d");
        tab2.innerHTML = tab1.innerHTML;
        function Marquee()
        {                      
        if(tab2.offsetTop-tab.scrollTop<=0)
                tab.scrollTop-=tab2.offsetTop;
            else{
                tab.scrollTop++;    
            }
     }
        var Mar = setInterval(Marquee,speed);
        tab.onmouseover=function(){clearInterval(Mar);}
        tab.onmouseout = function(){Mar = setInterval(Marquee,speed);}