Prevent Firefox Web Notifications from automatically Closing

Question

I've got Web Notifications working in Firefox in combination with Server Sent DOM events. Unfortunately the notifications disappear after about two to three seconds. I prefer Chrome's method of leaving the message visible (with a maximum of three displayed at any given time) until the user clicks the notification.

Here is what I have...

window.onload = function(e)
{
 if ('EventSource' in window)
 {//Server Sent DOM Events
  var sse = new EventSource('../mail/sse/');

  if (Notification.permission && Notification.permission!='granted')
  {
   Notification.requestPermission(function(status) {if (Notification.permission!=status) {Notification.permission = status;}});
  }
  else if (window.webkitNotifications && window.webkitNotifications.checkPermission()!=0)
  {
   document.getElementsByTagName('body')[0].addEventListener('click',function() {window.webkitNotifications.requestPermission();},false);
  }

  es.onclick = function(sse)
  {
   //
  }

  //doesn't work
  es.onclose = function(es) {es.preventDefault();}

  es.onmessage = function(sse)
  {
   if ('Notification' in window)
   {
    if (window.webkitNotifications)
    {
     var n = webkitNotifications.createNotification('images/stuff.gif','New Email Message(s)',sse.data);
     n.show();
     n.onshow = function() {setTimeout(notification.close,15000);}
    }
    else
    {
     var n = new Notification('New Email Message(s)',{icon:'images/stuff.gif',body:sse.data});
    }
   }
  }
 }
}

Answer 1

It's a known bug in Firefox...

https://bugzilla.mozilla.org/show_bug.cgi?id=875114