//***************************
//��ҳͷ��5����JS����
//***************************
var time = 550;
var h = 0;
     function addCount()
     {
         if(time>0)
         {
             time--;
             h = h+5;
         }
         else
         {
             return;
         }
         if(h>550)   //�߶�
         {
             return;
         }
         document.getElementById("ads").style.display = "";
         document.getElementById("ads").style.height = h+"px";
         setTimeout("addCount()",30); 
     }
    
     window.onload = function showAds()
     {
         addCount();
         setTimeout("noneAds()",20000); //ͣ��ʱ���Լ��ʵ�����
     }
     
    
   
     var T = 550;
     var N = 550; //�߶�
     function noneAds()
     {
         if(T>0)
         {
             T--;
             N = N-5;
         }
         else
         {
             return;
         }
         if(N<0)
         {
             document.getElementById("ads").style.display = "none";
             return;
         }
        
         document.getElementById("ads").style.height = N+"px";
         setTimeout("noneAds()",30); 
     }