CRM U.I browser auto logout

Dear All,

I have this strange issue with CRM UI. We have set the parameter rdisp/plugin_auto_logout with value 600.

This logs out the user from UI in case the idle time out is more tha 10 min.After that the page displayed shows as below:

"Your session has timed out! Click her to restart"

When we click on that link the user logs in again directly to the UI. What we want is that the browser should close once the time-out occurs. Is this posible by any of the ways such as any parameter in Java or if we can set any cookie time.

Kindly let me know the same .