Detecting when Flex app terminates

In a editor-type application I'm writing using Flex 2 I'd
like to show a
popup dialog "Save changes?" when the user closes the browser
window (or a tab in case of tabbed browsing) or when the
browser
navigates to another site / page.
Anyone know if there's an event that signals the end of a
flex app.
Preferably a canceable event so the popup dailog could
include
a Cancel button.
Thanks

Not from within Flex. Some solutions involve using javascript
onBeforeUnload and flex's ExternalInterface to do this.
Tracy

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Ahhh,,, yes, I appologize. I will make better headings next
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mx.collections::ArrayCollection)#0
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[5] (Object)#8
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TYPE = ""
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Detecting when Flex app terminates

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