(function() {
var date = new Date();
var pathname = self.location.pathname;
var postYear = parseInt(pathname.slice(1, 5));
var postMonth = parseInt(pathname.slice(6, 8));
if ((date.getFullYear() - postYear) * 12 +
(date.getMonth() + 1 - postMonth) < 6)
return; // 小于6个月，非过时内容
var notice = document.createElement('div');
notice.style['top'] = '0';
notice.style['left'] = '0';
notice.style['width'] = '100%';
notice.style['text-align'] = 'center';
notice.style['background'] = '#ffee00';
var language = (navigator.browserLanguage || navigator.language).toLowerCase();
if (language === 'zh-cn')
notice.innerHTML = '<h2>注意：页面内容可能过时或不正确，请谨慎参考！</h2>';
else
notice.innerHTML = '<h3>Note: The page content may be outdated or incorrect, please use caution!</h3>';
var firstChild = document.body.firstChild;
document.body.insertBefore(notice, firstChild);
setTimeout(function () {
notice.style['display'] = 'none';
}, 1000 * 10);
})();
