Auto update/refreshing Notifications

[Emeralda]

Rawr, would it be possible to make the a mod so the notification would automatically update to show the current number of notifications without the need to refresh the page? I know DBTech released something similar, but it was only for vB4. I'm talking about this thingy:

http://img405.imageshack.us/img405/8607/6990d7fda9ac4cec8977c64.png