calling a javascript function on closing browser

Hi,
I am trying to call some javascript function, e.g. logoff, when some body click on 'X' on the browser (top right corner). When I tried to use onUnload method, this method is called everytime we changes the page.
I am trying to kill my java session and everything, doing proper logoff, whensomebody closes the browser.
Any help will be appreciated.
Thanks.

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Eric

Now for the question. IE has onBeforeunload and that is is your only option, unless you use seesion cookies and check them, but I do not have time to go into it since I have to goto work.

Originally posted by Babar:
Hi,

I am trying to kill my java session and everything, doing proper logoff, whensomebody closes the browser.
Any help will be appreciated.
Thanks.

you just have to invalidate the session. Dont use js for that. When the user closes the browser the session becomes invalid. If u have a log off button then u have to invalidate the session

When the user closes the browser the session becomes invalid.

Incorrect. The session has no idea that the browser was closed. It will timeout (after whatever period is specified on the server) if no further activity takes place, but the session will not automatically invalidate upon browser close.
hth,
bear

Originally posted by Babar:
Hi,
I am trying to call some javascript function, e.g. logoff, when some body click on 'X' on the browser (top right corner). When I tried to use onUnload method, this method is called everytime we changes the page.
I am trying to kill my java session and everything, doing proper logoff, whensomebody closes the browser.
Any help will be appreciated.
Thanks.

Hi..one solution for this is that using javascript...in the page have a hidden field control say hdCloseFlag, with initial value "Yes".
If u have some buttons like Save,etc. other than Cancel/Close,etc. on Click of Save button u can change the hidden control value to "No".
If the user presses Close/Cancel button the u can explicity call the invalidate method by calling some jsp(which contained this invalidate process)
using the below js function.
But onUnload of the form page..then call a javascript fn..which checks for the hidden control value..for "Yes"..if true..then calls the jsp page doing invalidate process.
eg.
<BODY onUnload="javascript:_close();">
<SCRIPT>
function _close()
{
if(document.form.hdInvFlag.value=="Yes")
{
//This will submit to the invalidate page using GET method without refreshing the current page
var delImg = new Image();
delImg.src = "invalidate.jsp";
}
}
</SCRIPT>
Hope this is solves ur problem..
Naveen

Originally posted by Bear Bibeault:

Incorrect. The session has no idea that the browser was closed. It will timeout (after whatever period is specified on the server) if no further activity takes place, but the session will not automatically invalidate upon browser close.
hth,
bear

when thw user closes the browser and then opens a new window another session will be created ie wat i meant by that.

Hi Sunita
I think , thats not what you meant. When a user closes windows , session still remains .
when he opens a new windos , new session is created but the old session still REMAINS active.
This is a topic which has got no solution ideally.
Thanks
Manas