如：在浏览并关闭www.shuyong.net后，自动弹出www.baidu.com这个页面。具体代码如下
<script type="text/javascript">window.onunload = function(){window.open("http://www.baidu.com");}</script>
以上不管是打开或者关闭网站都会弹出新的页面，把代码放入<head></head>之间即可
实现24小时之内只弹出一次窗口代码如下
<script language="javascript">
function setCookie(www_shuyong_net, value, expire){window.document.cookie = www_shuyong_net + "=" + escape(value) + ((expire == null) ? "" : ("; expires=" + expire.toGMTString()));}
function getCookie(www_shuyong_net){var search = www_shuyong_net + "=";if(window.document.cookie.length > 0){offset = window.document.cookie.indexOf(search);if(offset != -1){offset += search.length;end = window.document.cookie.indexOf(";", offset) if(end == -1)
end = window.document.cookie.length;return unescape(window.document.cookie.substring(offset, end));}}return null;}
function register(www_shuyong_net){var today = new Date();var expires = new Date();
expires.setTime(today.getTime() + 1000*60*60*24);//时间格式：1000*60*60*24代表24小时
setCookie("shuyong_net", www_shuyong_net, expires);}
var exitURL="http://www.shuyong.net/";//这个地方放置你的HTML地址
function openWin(){var c = getCookie("shuyong_net");if(c != null){return;}register("shuyong_net");var featureStr="''";
featureStr="";//这里是设置你上面的HTML弹出的高度和宽度的
self.focus();var ExitWindow = window.open(exitURL,'', featureStr);ExitWindow.focus();}
setTimeout("openWin()",3000);//3秒后弹出
window.focus();
</script>
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