Ajax and ActiveMQ

Sometimes you need to notify users (browsers) about some events occurred on the server side. For example someone has added the row into the table and you need to be notified about it.
Also the client could be not just the browser but any program component. And this components can be dynamically connected and disconnected.
The solution could be the message queue and publish subscribe pattern.
 After some research I managed to work the solution based of ActiveMQ 5.7.0 and Apache Tomcat 6.0.35. Here is how I did it.