make $CI (superobject) global?

[eluser]ajsie[/eluser]
i have auto-loaded models and libraries, but before i can use them in my models and library classes i have to type like this:

$CI =& get_instance();
$CI->classname->method();

and that's annoying to have to have the first line all the time. so i thought i could have that line in a pre_controller hook.

however, i have to make $CI global for it to work (or that variable will only live in the hook method)

i tried this in the pre_controller hook:

Code:

public function set() {
      global $CI;
      $CI =& get_instance();
}

but it didnt work. how could i make $CI global through the whole application?

thanks!