Duplicating input field groups by clicking add another link php

Hello everyone,
This is my first forum post.
I hope i'll get some help.

I'm using wordpress. And i'm using a plugin called magic fields.
It is a wonderful wordpress custom fields plugin i've ever tried so far.

I have a custom field group and it can be duplicated by clicking add another link.

Check this screenshot.

Before duplicating the group:

wiki.magicfields.org/lib/exe/fetch. ...

After duplicating the group:

wiki.magicfields.org/lib/exe/fetch. ...


The point is i don't want my users access wordpress admin. So i would like to have a front end posting form. So can anyone give me some php snippets/classes which does this job?

Thanks