External Login Form

I have a site that uses html, that ive turned over to php. I would like to have a login form on the site outside of php fusion, where the users can login php fusion from outside of the php fusion script.

external webiste outside of php fusion,

now my site is within the same hosting and the under the same domain

here is link to the html pages with the login form Click login on top right
http://legacyconstructionfresno.com/index_b.html


Please note that this site is under construction.