var t;
var speed=3;
var scroll_div=document.getElementById('scroll_div');
var scroll_begin=document.getElementById('scroll_begin');
var scroll_end=document.getElementById('scroll_end');
function MarqueeLeft()
{
    clearTimeout(t);
    if(scroll_end.offsetWidth-scroll_div.scrollLeft<=0)
        scroll_div.scrollLeft-=scroll_begin.offsetWidth
    scroll_div.scrollLeft+=speed;
    t=setTimeout(MarqueeLeft,50);
}
function MarqueeRight()
{
    clearTimeout(t);
    if(scroll_div.scrollLeft<=0)
        scroll_div.scrollLeft=scroll_end.offsetWidth;
    scroll_div.scrollLeft+=speed;
    t=setTimeout(MarqueeRight,50);
}

if(scroll_div.clientWidth<scroll_begin.scrollWidth)
{
    scroll_end.innerHTML=scroll_begin.innerHTML;    
    document.getElementById('GoLeft').onmouseout=function(){speed=3;} 
    document.getElementById('GoRight').onmouseout=function(){speed=-3;} 
    document.getElementById('GoLeft').onmouseover=function(){speed=6;MarqueeLeft();}
    document.getElementById('GoRight').onmouseover=function(){speed=-6;MarqueeRight();}
    scroll_div.onmouseover=function(){clearTimeout(t);}    
}
MarqueeLeft();