Notifications HTML5

gistfile1.txt

if (window.webkitNotifications) {
   if (window.webkitNotifications.checkPermission() == 0) {
       var note = window.webkitNotifications.createNotification("", "Hi", "I'm a notification");
       note.ondisplay = function(event) {
            setTimeout(function() {
                event.currentTarget.cancel();
            }, 2000);
       }
       note.show();
   }
    else {
       window.webkitNotifications.requestPermission();
       return;

    } 
}

Check this: http://www.html5rocks.com/en/tutorials/notifications/quick/