note 32510 added to ref.session

I am trying to find a way to automatically destroy a session when the browser window is closed or if the user leaves my site. Otherwise, there are a bunch of open sessions. Is this possible? I tried some javascripts but since there are forms involved, window.unonload or .onbeforeunload does NOT work. Any ideas? Thanks ---- Manual Page -- http://www.php.net/manual/en/ref.session.php Edit Note -- http://master.php.net/manage/user-notes.php?action=edit+32510 Delete Note -- http://master.php.net/manage/user-notes.php?action=delete+32510&report=yes Reject Note -- http://master.php.net/manage/user-notes.php?action=reject+32510&report=yes