[Help] Insert a Contact Form

Hi there,

Im newbie with CI also php. Im learning everyday.

I did the tutorial from CodeIgniter, specifically about StaticPages.

So I have Class Pages, and function view.

I wanna put a Contact Form, this one (https://github.com/abkr/codeigniter-contact-form) so i create a new controller named Contact.php and the view from the source.

When i go to: url.com/contact of course i got an error: Call to undefined function validation_errors()

I guess when "contact" is called, first call to "Pages" controller?

My question is how can I add this Contact Form into my "contact" whithout disturbing my ClassPages from tutorial.

Sorry for my bad english.