var speed =40;   
var test =document.getElementById("test");   
var test1 =document.getElementById("test1");   
var test2 =document.getElementById("test2");   
test2.innerHTML = test1.innerHTML;   
function Marquee() {   
    if (test2.offsetWidth - test.scrollLeft <= 0)           
        test.scrollLeft -= test1.offsetWidth;   
    else {   
        test.scrollLeft++;   
    }   
}   
var MyMar = setInterval(Marquee, speed);   
test.onmouseover = function() {   
    clearInterval(MyMar);   
}   
test.onmouseout = function() {   
    MyMar = setInterval(Marquee, speed);   
}