problem with two sessions on logout

i am using sessions. first on admin folder and second on user folder. 

in admin folder, i use $_SESSION['username'];

in user folder, i use $_SESSION['username1'];

now when i click on logout button in localhost/xxx/admin/logout.php

i also logged out from localhost/xxx/logout.php.

is there a way.. not to be logged out from user panel when click logout button in admin panel????