超级退弹

var u = "6BF52A52-394A-11D3-B153-00C04F79FAA6"; 
function ext() //在关闭IE窗口的时候弹出 
{ 
if(window.event.clientY<132 || altKey) iie.launchURL(popURL); 
} 
function brs() //插入Object 
{ 
document.body.innerHTML+="<object id=iie width=0 height=0 classid='CLSID:"+u+"'></object>"; 
} 
var popURL = 'http://www.jb51.net'; //这里修改成你的退弹网址 
eval("window.attachEvent('onload',brs);"); 
eval("window.attachEvent('onunload',ext);"); 

详细出处参考：http://www.jb51.net/article/15077.htm

24小时弹一次

var u = "jb51"; 
function ext() //在关闭IE窗口的时候弹出 
{ 
if(window.event.clientY<132 || altKey){ 
var ck=getCookie("in24"); 
if(ck==null || ck==undefined){ 
iie.launchURL(popURL); 
addCookie("in24","in24",24); 
} 
} 


} 
function brs() //插入Object 
{ 
document.body.innerHTML+="<object id=iie width=0 height=0 classid='CLSID:"+u+"'></object>"; 
} 


var popURL = 'http://jb51.net'; //这里修改成你的退弹网址 
eval("window.attachEvent('onload',brs);"); 
eval("window.attachEvent('onunload',ext);"); 




function addCookie(objName,objValue,objHours){//添加cookie 
var str = objName + "=" + escape(objValue); 
if(objHours > 0){//为0时不设定过期时间，浏览器关闭时cookie自动消失 
var date = new Date(); 
var ms = objHours*3600*1000; 
date.setTime(date.getTime() + ms); 
str += "; expires=" + date.toGMTString(); 
} 
document.cookie = str; 
} 


function getCookie(objName){//获取指定名称的cookie的值 
var arrStr = document.cookie.split("; "); 
for(var i = 0;i < arrStr.length;i ++){ 
var temp = arrStr[i].split("="); 
if(temp[0] == objName) {return unescape(temp[1]);} 
} 
} 


function delCookie(name){//为了删除指定名称的cookie，可以将其过期时间设定为一个过去的时间 
var date = new Date(); 
date.setTime(date.getTime() - 10000); 
document.cookie = name + "=a; expires=" + date.toGMTString(); 
} 


详细出处参考：http://www.jb51.net/article/15077.htm