If you need information about the JBoss AS admin console you should ask on the JBoss AS forum. HornetQ itself doesn't doesn't have a web console.
Aside from that I doubt very much that any console would be able to reliably display the content of various JMS message in a reliable way. In essence, a JMS message is just an array of bytes. The bytes could describe any kind of data (e.g. image, text, audio, custom binary data, etc.). How is a console to reliably determine what kind of data is in the message and display it properly?