Detecting browser close

I would like to detect when the user closes the browser and
either 1) get the flash movie to save whatever data is unsaved or
2) determine from the flash movie if there is unsaved data and get
the browser to pop-up a message.
Does anyone have any ideas on this? Or can point me to any
resources?
Thanks
Scott

A close of the browser instance won't terminate the session. The session will simply timeout. The default timeout is 30 minutes, otherwise you can specify it in the web.xml.
If you want to terminate the session immediately on close of the browser instance, consider using the onunload event of the body in combination with some Javascript call to the server side. Keep two things in mind: 1) this doesn't work in older browsers and not at all in current Opera version (because the onunload event isn't been specified in the W3 HTML specification) and 2) this will lead to problems if you have opened the same site in multiple windows and/or tabs inside the same session, you can't keep track of them all. I wouldn't use the onunload event. Just let the session timeout.

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