Single page website with login control
<p>I have a single page website (asp.net using c#) that displays some grid data when no user is logged in.
When a user presses login a popup control opens and they can login. when logged in extra functionality is available on that page.
Then after a period of inactivity (i.e no postback) i want the funtionality to be disabled automatically on that page and a message stating you have been logged off.</p>

<p>Typical pages use a seperate login page but thats not what i want.
is the above possible and how?</p>

<p>thanks
damo</p>
