How to make 2 different session in one codeigniter ?

[eluser]Mario "St.Peter" Valentino[/eluser]
hello everybody ,

i have trouble. i have 2 application in 1 codeigniter application : one for administrator & other one for frontend.

when i open both application in same browser. i have problem when i open administrator application first and login i have no problem then i open frontend application and when back to administrator application i have to login again.

is there anybody here can help me to solve this problem ?
and give me code please.



Thanks


Mario