Login script and posting

Hey there, I have a little app framework, where I seperate get and post 
requests into methods for the page. I've run into an issue where I have 
the login form within the event dispatcher class posting where its 
logged out of the script, therefore posting into the script and firing 
the post method.

I was wondering if there was a way if I login to a login script and I 
use the onLogin method to redirect to antoher page. However what if I 
the pages is forced back to the login script, which event method is 
fired, as I'd want to bring it back to the login form somehow :\