multisite registration

I had a problem to add button to multisite registration form. add_action('login_form', 'new_add_fb_login_form'); doesn’t work, so I add add_action( 'signup_extra_fields', 'new_add_fb_login_form' ); but still did’t work, so next step was add ,#setupform to generated jquery:
var loginForm = $('#loginform,#registerform,#front-login-form,#setupform');

one more edit: I covered text “OR” with function _e: <?php _e('OR'); ?> (to make translation)

anyway good work 😉 thx for plugin

https://wordpress.org/plugins/nextend-facebook-connect/