Chrome桌面提醒功能，兼容新老版本，firefox最新版本也通过

//桌面提醒
function notify(title, content) {

if(!title && !content){
title = "桌面提醒";
content = "您看到此条信息桌面提醒设置成功";
}
var iconUrl = "/images/send_ok.png";

if (window.webkitNotifications) {
//chrome老版本
if (window.webkitNotifications.checkPermission() == 0) {
var notif = window.webkitNotifications.createNotification(iconUrl, title, content);
notif.display = function() {}
notif.onerror = function() {}
notif.onclose = function() {}
notif.onclick = function() {this.cancel();}
notif.replaceId = 'Meteoric';
notif.show();
} else {
window.webkitNotifications.requestPermission($jy.notify);
}
}
else if("Notification" in window){
// 判断是否有权限
if (Notification.permission === "granted") {
var notification = new Notification(title, {
"icon": iconUrl,
"body": content,
});
}
//如果没权限，则请求权限
else if (Notification.permission !== 'denied') {
Notification.requestPermission(function(permission) {
// Whatever the user answers, we make sure we store the
// information
if (!('permission' in Notification)) {
Notification.permission = permission;
}
//如果接受请求
if (permission === "granted") {
var notification = new Notification(title, {
"icon": iconUrl,
"body": content,
});
}
});
}
}
}