document.getelementbyid("marquee_ul").innerhtml+=document.getelementbyid("marquee_ul").innerhtml;     
var liobj=document.getelementbyid("marquee_ul").getelementsbytagname("li");    
var linums=liobj.length;      //�õ�ͼƭ����ŀ  
var liwidth=liobj[0].offsetwidth;  //�õ�li�ŀ��   
var tj_zsgs_div=document.getelementbyid("marqueeblock"); 
var tj_zsgs_ul=document.getelementbyid("marquee_ul");  
tempwidth=liwidth*linums; 
tj_zsgs_ul.style.width=tempwidth+"px";    //�����ܿ�� 
function marqueezsgs(){  
if(tj_zsgs_ul.offsetwidth<=tj_zsgs_div.scrollleft*2){  
tj_zsgs_div.scrollleft=0; 
}else{  
tj_zsgs_div.scrollleft++;  
}   
}   
var mymar=setinterval("marqueezsgs()",15);