Atmosphere.js has errors

[antani]

I cloned this example and deployed the WAR file on Tomcat 7.0.42. I uncommented atmosphere-redis dependency inside pom.xml and added broadcaster = RedisBroadcaster.class inside the @managedservice annotation for class Chat.
maven could build the .war file which I manually copied over to Tomcat's webapps directory.
Tomcat could successfully deploy the war file. when I ran index.html in Firefox 23.0.1, I can see the following error inside firebug.

The error is tagged on atmosphere.js line 962 - due to this error, the page can not connect to the websocket and the page stays in the state of "Connecting"