The issue that I am facing is I need to capture the window close event,I already know that I can do it in two ways
1)catch the unload action with Java script
2)Catch the window.event.clientX and window.event.clientY.
Once I capture this input I should be able to log-off the user.
But the issue is, I should not log-off the user in the case if refresh button is pressed F5,and in the cases the user navigates to other site from the parent site.