---------------------------ad.js-的代码如下:---------------------------------

以下是引用片段：
function setCookie(name, value, expire) {   
  window.document.cookie = name + "=" + escape(value) + ((expire == null) ? "" : ("; expires=" + expire.toGMTString()));
}

function getCookie(Name) {   
   var search = Name + "=";
   if (window.document.cookie.length > 0) { // if there are any cookies
     offset = window.document.cookie.indexOf(search);
  if (offset != -1) { // if cookie exists
       offset += search.length;          // set index of beginning of value
    end = window.document.cookie.indexOf(";", offset)          // set index of end of cookie value
    if (end == -1)
      end = window.document.cookie.length;
    return unescape(window.document.cookie.substring(offset, end));
     }
   }
   return null;
}

function register(name) {
  var today = new Date();
  var expires = new Date();
  expires.setTime(today.getTime() + 1000*60*60*24);
  setCookie("ItDoor", name, expires);
}

  var exitURL=http://homepage.yesky.com/;

function openWin() {

  var c = getCookie("ItDoor");
  if (c != null) {
    return;
  }
  register("xiaolin");
  
  var featureStr="''";
  
    featureStr="'top=0,left=0,width=800,height=600,toolbar=yes, menubar=no, scrollbars=no, resizable=no, location=no, status=no,center:no'";

   
  self.focus();
  
  var ExitWindow = window.open(exitURL,'', featureStr);
  
    ExitWindow.focus();
  
}

openWin();
window.focus()
     ========================完成任务==============

      在需要弹出的网页中调用上面的代码:

以下是引用片段：
<Script src="ad.js"></Script>