Custom JFB connect login image problem

JFBConnect can't do that automatically when using a custom image for the button. What I'd recommend is simply creating a Custom HTML module that is only displayed to guests. That way, when the user logs in, the whole module won't display.

For information on how to do that, see:
docs.joomla.org/Access_Control_List/1.6-...nu_Items_and_Modules
brian.teeman.net/joomla/415-the-guest-us...nu-items-and-modules

Hope that helps,
Alex

Very glad to hear that got you going! Should you need anything else, just let us know.

Finally, if you haven't already, please consider leaving a rating and review for JFBConnect, or our support, on the Joomla Extension Directory. It certainly isn't required, but is very appreciated:
extensions.joomla.org/extensions/social-...ook-integration/7215

Thanks, and good luck,
Alex