Submit processing with javascript "onUnload" event

Hi there,
I want a page to save its state regardless of how the user exits the page. Using page tabs, which have direct URLs, it seems the only way to do this is to use a javascript "onUnload" event which calls doSubmit(). The problem with this is that the submission requires a branch. Obviously, I don't want to branch the page; a destination has already been set. Telling the branch the is impossible as there is no way to access the destination URL for an onUnload event (understandably; it would be a serious breach of privacy.)
So, the question I have is: is there any way to get a call to doSubmit() (or similar) to process the page, but not branch afterwards?
Many thanks,
Robert

Robert,
Take a look at the following thread -
Re: clean page items when user leaves a page
Whilst that thread deals with clearing items when the user leaves a page, it illustrates the issues of trying to capture the event of the user 'leaving' the page (after all 'leaving the page' could mean that they navigate to Google instead).
An alternative way would not to try and capture the 'leaving event' but to store the values in session state automatically (perhaps using some of Carl's Ajax examples) when the user types them in, then have an application process that runs on every page that determines whether those values need to be written to the database or not.
As an aside...I've heard of this requirement coming up quite a few times and I always question the logic behind it....since for every method that you can come up with as a way of forcing my input to be saved, I can come up with a way that will prevent it from working....until eventually we just reach the stage where I stand up and switch the machine off ;)

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