Adding my own template to register page help

Okay, so what I did, is I took the register page that the majority of private servers have, and I deleted all the text like CHar Server, World Server, Players Online, etc, so that just the register fields showed up.

I tried to register like that, and it worked perfectly fine. So I copied the entire code into a page that had a template already set out (my forum template). It showed up perfectly fine after changing the font colour from white to black (so it would show), I tried to register an account, and I got this error:

Fatal error: Call to undefined function exi() in /home/frflyff/public_html/register/index2.php on line 164

You can see my current register page here:
http://register.freedomflyff.com

And the one I tried making, here:
http://freedomflyff.com/register/index2.php

Try registering an account on the second one, and you can see the error yourself.

Anyone know how I can fix this?

Edit: Yes, the second one says 'Welcome back, Raiden', but I still have to edit all the custom text.

Hai, remember to include the correct config.php~ It should define exi(). If it doesn't work pm me for more help. I like your site design on the second page <:

If you want to merge the MyBB registration and the FlyFF Registration, I can help with that too. I'm planning to do similar, except for with vBulletin.

Thanks. :)

And I pmed you! ^^