Notification Pop up

Hi,

Any one know how to create a notigication Pop up in ruby Onrails.
I have a ruby Application where i will be maintaining different roles.if a person sends an event or some message it should get pop up when the other person logins to his dashboard automatically.

If any one know about this plz let me know.

re: Notification Pop up

My only thought is to track on the server, then send a response using Ajax.