logging out problem

[fullyloaded]

hi

im having a little problem after logging out of my site logging out is not a problem it will logout but after logging out the users online will still show im online even after 20 minutes so i checked my database to see whats going on under the online table in my database it is saying 1 (1=online) and (0=offline) is there anyway to set it back to 0 after logging out? here is a bit of code

function logout()
{

unset($_SESSION['user']);
unset($_SESSION['pass']);
@session_unregister('user');
@session_unregister('pass');
setcookie("user", $_SESSION['user'], time()+1);
setcookie("pass", $_SESSION['pass'], time()+1);

session_destroy();
}

[gnawz]

Aritw an update statement on logout that sets the desired filed to what you want