var MyMar;
function Marquee(){
if(typeof(scroll_begin) == "unknown")
return;
    if(scroll_end.offsetTop-scroll_div.scrollTop<=0)
        scroll_div.scrollTop -= scroll_begin.offsetHeight;
    else
        scroll_div.scrollTop++;
}
function ScrollImgTop(){


    var speed=20;

//    var scroll_begin = document.getElementById("scroll_begin");
//    var scroll_end = document.getElementById("scroll_end");
//    var scroll_div = document.getElementById("scroll_div");

    if(typeof(scroll_begin) == "unknown")
        return;
    else
    {
    SubScrollImgTop(speed);

    }
    return;

}

function SubScrollImgTop(speed)
{
    scroll_end.innerHTML=scroll_begin.innerHTML;

    clearInterval(MyMar);
    MyMar=setInterval(Marquee,speed);

    scroll_div.onmouseover=function() {clearInterval(MyMar);}
    scroll_div.onmouseout=function() {MyMar=setInterval(Marquee,speed);}
}