var speed=50;
ty2.innerHTML=ty1.innerHTML;
function Marquee(){
    if(ty2.offsetTop-ty.scrollTop<=0){
        ty.scrollTop-=ty1.offsetHeight;
    }
    else{
        ty.scrollTop++;
    }
}
var MyMar=setInterval(Marquee,speed);
ty.onmouseover=function() {clearInterval(MyMar)};
ty.onmouseout=function() {MyMar=setInterval(Marquee,speed)};