Put the folder "itip" into a path served by your webserver and open the index.html. 

You can log in either 
a) By logging in into the corresponding ox6 frontend and relying on autologin
b) By specifying a session to use as a parameter (#session=...)
or
c) By specifying a login/password combination as parameters(#login=...&password=...)

Paste an ITIP message into the textarea, hit "analyze" and see the resulting analysis.