Notificon :: Client-side favicon notifications.
1) Include the notificon.js in your page 2) Call Notificon(12) to overlay the number 12 on your favicon.
Notificon can take 2 parameters - Notificon(label, favicon_url) where label is the text to overlay, and favicon_url is the url of a 16x16 favicon.
An empty label will clear your favicon to its original state. e.g. Notificon();
Favicon_url defaults to your primary favicon (if specified in head, or with fallback to /favicon.ico)