Bug 347423. Addons: No updates found message not accessible. r=mano, r=pilgrim

            this.hidden = false;

            this.notifyData = aNotifyData ? aNotifyData : null;

            this.closeButton = aShowCloseButton;

            // Fire event for accessibility APIs

            var event = document.createEvent("Events");

            // Fire event for accessibility APIs after reflow,

            // so that accessibility code sees visible frame for

            // the notification and can create accessible object for it

            function fireA11yAlertEvent(self) {

              var event = self.ownerDocument.createEvent("Events");

              event.initEvent("AlertActive", true, true);

            this.dispatchEvent(event);

              self.dispatchEvent(event);              

            }

            setTimeout(fireA11yAlertEvent, 0, this);

          ]]>

        </body>

      </method>