gistfile1.rb

def new
    @contact        = Contact.new
    @address        = Address.new
    @e_mail_address = EMailAddress.new
    @phone_number   = PhoneNumber.new
    
    @addresses        = Address.find(:all)
    @e_mail_addresses = EMailAddress.find(:all)
    @phone_numbers    = PhoneNumber.find(:all)
    
    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @contact }
      format.js { render partial: 'form', content_type: :html}
    end
end

gistfile2.js

$(function(){
  $('#new_contact').bind('ajax:success', function(e, data) {
    $.facebox(data);
    //Set form to remote
    $("#facebox form").attr("data-remote", "true");
    //Hide extra forms (address,email,phonenumber)
    $("#contact_extras").hide();
  });
});