/**
 * @author administrator
 */


	
	function lb(id,speed){
	var oad=document.getelementbyid(id);
	var oul=oad.getelementsbytagname("ul")[0];
	var ali=oul.getelementsbytagname("li");
	var speed=speed;
	var timer=null;
	oul.innerhtml+=oul.innerhtml;
	oul.style.width=((ali[0].offsetwidth)*ali.length)+"px";

	for(var i=0;i<ali.length;i++){
		ali[i].onmouseover=function(){
			//alert("111");
			clearinterval(timer);
			
		}
		ali[i].onmouseout=function(){
			clearinterval(timer);
			timer=setinterval(auto,30);
		}
	}
		timer=setinterval(auto,30);
	function auto(){
		oul.style.left=oul.offsetleft-speed+'px';
		if(oul.offsetleft<-oul.offsetwidth/2){
			oul.style.left='0px';
		}
		
	}
	}
	
	
	//获取class元素
function getelementbyclassname(classname)
{
	var obj=null,obj_num=null;
        classelement = new array(); 
        obj=document.getelementsbytagname("*"); 
        obj_num=obj.length;
         for(i=0;i<obj_num;i++)
          {
                if(obj.item(i).classname==classname) 
                 {
                     classelement.push(obj.item(i));
                 }
          }
 return classelement; 
}
//实现多事件绑定
 function addloadevent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != "function") {
    window.onload = func;
  } else {
    window.onload = function() {
		
		
		
		
		
      oldonload();
      func();
    }
  }
}



window.onload=function(){
	if(document.getelementbyid("pic_div")){
	lb("pic_div","1");}
	
	}