feature request: show Registration Form as a second tab on the pop-up

It is good to show a pop-up login form with this module.

I would like to suggest a new feature to improve this module better: Please add a new option to "show registration form as the second tab on the pop-up".

That is to say, when visitor click on the "login" button, there will show a pop-up in the center of the screen, and on this pop-up dialog, there are 2 (two) Tabs, one is "Login in", one is "Registration now". Of course, this "multi-tab" option can be disabled to show only one login form, if the Admin does not want to show registration form.

Thank you.