How can I trap browser window close

[Srinivas]

How can I trap browser window close event in javascrit. AS I am using sessions, want to logout session when the user closes the brwoser window..
I tried using onunload and onbeforeunload events but it didnt worked..
Could you please some one help me..

[Dirk Schreckmann]

kurraram,
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[Randall Twede]

onunload() should work. onbeforeunload() only works in IE. im not a js expert, but i will see if i can find some sample code for you.

[Randall Twede]

this site might help you. it uses frames so i cant send you exact page. click on "handling events". near the bottom of that page they talk about capturing events
http://developer.netscape.com/docs/manuals/communicator/jsguide4/index.htm

[Yuriy Fuksenko]

My guess - you cannot.
I mean, your code will not be able to say, is this guy goes to another page, or closes hte window.
You should use reasonable value for session timeout in server settings.
You actually could try to use "onbeforeunload" to set some flag on a server side, and then if it is not reset in some amount of time, invalidate session, and all your pages will have hidden frame, and they will load into it some jsp for their "onload" event, and this jsp will reset this flag. So, page got "onbeforeunload", it set flag in a session, another page loads - it loads this hidden frame, wich reset value in a session.
But it doesn not sounds good even for me