need help with cometd

Hi,
I was trying to implement the example provided by Martin Ankerl at http://martin.ankerl.com/2007/08/21/ajax-dojo-comet-tutorial/

Following is my code:
------------------------------------------------------------------------------------------

<head>
<style type="text/css">
@import "../js/dojo-release-1.0.1/dijit/themes/tundra/tundra.css";
@import "../js/dojo-release-1.0.1/dojoroot/dojo/resources/dojo.css"
</style>
<script type="text/javascript" src="../js/dojo-release-1.0.1/dojo/dojo.js"
djConfig="parseOnLoad: true">
</script>

<script type="text/javascript">
dojo.require("dojox.cometd");

dojox.cometd.init("../cometd");

dojox.cometd.subscribe('/hello/world', false, "publishHandler");

publishHandler = function(msg) {
alert("hi");
}
</script>
</head>
<body>
<input type="button"
onclick="dojox.cometd.publish('/hello/world', { test: 'hello world' } )"
value="Click Me!">
</body>

------------------------------------------------------------------------------------------

cometd in web.xml:

<servlet>
   <servlet-name>cometd</servlet-name>
   <servlet-class>org.mortbay.cometd.continuation.ContinuationCometdServlet</servlet-class>
   <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
   <servlet-name>cometd</servlet-name>
   <url-pattern>/cometd/*</url-pattern>
</servlet-mapping>

It is a fairly simple example but I'm a novice. When I launch the url in the browser, the page is shown with no javascript errors. I click on button and nothing happens.
Firebug shows POST http://localhost:8989/appl/cometd with the response 'loading' for like ever.

Any help would be appreciated.

thanks!
RalfP

the dojox.cometd.init() call

Submitted by dante on Thu, 12/20/2007 - 19:18.

the dojox.cometd.init() call wants a url. Assuming your cometd server is running on port 8989, the call would look like:

dojox.cometd.init("http://localhost:8989/cometd");

also, in the subscription, I am not sure the false is valid. i've only used dojox.cometd.subscribe like:

dojox.cometd.subscribe("/hello/world",function(msg){
   alert(msg.data);
});

hope this helps.

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the dojox.cometd.init() call