I hope I have a simple configuration problem that others can help me with.  I am providing log-on with a simple link to the WindowsSignin.aspx.   This provides a semi-transparent log-on without forms.  Now my problem, question.

What I want to do is -  If the user selects the link to log-on, I would like some method of detecting the user is logged on and replace the log-on link with a log-off link  (http://portalname/default.aspx?&ctl=logoff)  which logs off the user.   This would work the same as using forms for log-on and log-off.  Has anyone done this before?

Thanks in advance.