Quickreply and "mods can close threads after reply".

[TCattitude]

I think is easy. I really don't know :nervous:

I want an option, that appears for specific mods in a forum, an obviously smods and admin... one option for close a thread after reply.

Something like this:
http://img90.echo.cx/img90/4581/image17lj.jpg
(Is a recreation only)

I have no skills in php, so, i ask here.
Someone can do that?... please

Thanks for all in advance