document.write("<form name=counter><input   type=text   name=countshow   size=16   style='  text-align:center; border:0; background:none'   value=''></form>");  
  s="第     31214     次"; 
  var   id,p=0;  
  function   show(){  
          document.counter.countshow.value=s;  
          p=p+1;  
          if(p>1){  
                      p=0  
          }  
          id=setTimeout('show()',2000);  
  }  
  show();