Hi,
Not sure I can get a screenshot right now, but I will try to explain.
When my CP page is displayed, the page has an Acceptable Use Policy and an "I Accept" button at the bottom. This is all part of the html that I uploaded to the Captive Portal.
At the top right of the screen when this page is displayed, is the "Join" button, this is not part of the html, it is provided by the iPhone itself.
When I click "I Accept", the Acceptable Use Policy disappears, and I just see a white web-page, but still the "Join" button remains at the top right, for about 10 seconds, then changes to "Done". when I click "Done" the web-apge disappears and I return back to the application I was in that initiated the Captive Portal process.
On the controller, my role changes from logon to guest as soon as I click the "I accept" button on the web-page.
Hope this makes sense,