var speed=30; 
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)};