This file are CWM flashable for those who's mobile soft key's are not working.
Procedure to flash the files
1 -> Switch of your
phone and start in recovery mode by Pressing Volume UP key + the Home key and
holding them press the Power button.
2 ->it will start
in CWM recovery mode.
3 -> Click on
install zip from sdcard and just flash the Add ICS Navigation Bar.zip
file.
4 -> After flash
complete, select reboot phone.
For Remove NavBar just follow the same procedure and select Remove Navigation Bar.zip instead of ICS Navbar.zip and you done.