how can I access a session variable inside a helper function?

[eluser]zrowcrypt[/eluser]
I dont want to pass $user_id (= $this->session->userdata('user_id')) to each and every helper function that requires the logged in user id for processing... how can i access a session variable inside these functions.

[eluser]WanWizard[/eluser]
You can access the CI superobject by using

Code:

// get the superobject
$CI =& get_instance();

// call the session library
$userid = $CI->session->userdata('user_id');