ITS Mobile logoff issue

Hi Friends,

Kindly find the below screen shot. I've used redirect URL option for Logoff. It's working fine. if I can again log on the screen it comes to the initial screen(Logo on screen, It's redirect the same URL). Once I clear the cookies or close the internet explorer then it's working fine. How to clear the cookies while logging off.

Thanks with Regards,

Vallamuthu M