var cc =1;
		  var lock ="on";
		  function fodb1()
		  {
		  if(lock != "off"){
		  var oo = $("D"+cc);
		   var pd = oo.parentNode.parentNode.parentNode.parentNode;
			
			var pd1 = oo.parentNode.getElementsByTagName("div");
			
            var td = pd.getElementsByTagName("ul");
			var nd = pd1.length;
			for(i=0;i<nd;i++)
			{
				if(pd1[i] == oo)
				{
					pd1[i].className = "mod";
					td[i].className = "dis";
				}
				else
				{
					pd1[i].className = "moardd";
					td[i].className = "undis";				
				}
			}
		  
		    cc++;
		    if(cc >4){cc=1;}
		    
		    }
		    
		   }	
		

        window.setInterval("fodb1()",3000);  //ÿ¸ôÒ»Ãë·¢Éú

   function $(id)
    {
        return document.getElementById(id);
    }
		  
		  
		  
		  function mexit()
		  {
		    lock ="on";
		  }
		
		  function fodd(obj)
		  {
		   	lock = "off";
			var pd = obj.parentNode.parentNode.parentNode.parentNode;
			
			var pd1 = obj.parentNode.getElementsByTagName("div");
			
            var td = pd.getElementsByTagName("ul");
			var nd = pd1.length;
			for(i=0;i<nd;i++)
			{
				if(pd1[i] == obj)
				{
					pd1[i].className = "mod";
					td[i].className = "dis";
				}
				else
				{
					pd1[i].className = "moardd";
					td[i].className = "undis";				
				}
			}
		  }