// JScript 文件

                                    
var fangxiang="1";
var speed=30;
document.getElementById("demo2").innerHTML=document.getElementById("demo1").innerHTML 
function Marquee(){ 
if(document.getElementById("demo2").offsetWidth-document.getElementById("demo").scrollLeft<=0) 
document.getElementById("demo").scrollLeft-=document.getElementById("demo1").offsetWidth 
else{ 
document.getElementById("demo").scrollLeft++ 
} 
} 
var MyMar=setInterval(Marquee,speed) 
document.getElementById("demo").onmouseover=function() {
clearInterval(MyMar)} 
document.getElementById("demo").onmouseout=function() {
if(fangxiang=="1")
    MyMar=setInterval(Marquee,speed)
else
    MyMar=setInterval(Marquee4,speed)
}                                                                        

function Marquee4()
{
    if(document.getElementById("demo").scrollLeft<=0)
        document.getElementById("demo").scrollLeft+=document.getElementById("demo2").offsetWidth;
    else
    {
        document.getElementById("demo").scrollLeft--
    }
}
        
function marqueeleft()
{   fangxiang="1";
    clearInterval(MyMar);
    MyMar=setInterval(Marquee,speed);
}
function marqueeright()
{
    fangxiang="2";
    clearInterval(MyMar);
    MyMar=setInterval(Marquee4,speed);
}