How to redirect to a "session timed out" page

 Membership provider has userIsOnlineTimeWindow attribute which I assume will force a logoff when time expires, and redirect to the Login.aspx page which is also the page used when anonymous user tries to access a page in a protected folder.
I would like to goto a "timed out" page when the user is timed out or the session times out, rather than going the login page.  Is there a way to do that? 
 
Thanks
 
 
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