CMS best practice on CI

[eluser]Felipe Deitos[/eluser]
I have read about routing in the user guide, and i guess that your examples dont make what i want...
hehehe I promisse that this is my last question.

What i actually want...
When the user access news(controller)/add(function)
I want url admin/news(controller)/add(function)

So in the url it will always seems that the user is inside the admin...
There anyway of doing this?

If there is no way of doing this routing... I wanna know if i can extend one controller from another?
Because in the admin controller there is the function called is_logged
And i will use this in all the other controllers... so it will be good if i can extend the admin controller instead of writting over and over again this function in every controller.