- singular = popup.to_s.singularize

:plain
  new crm.Popup({
    trigger     : "#select_#{singular}",
    target      : "#jumpbox",
    under       : "#select_#{singular}",
    appear      : 300,
    fade        : 300,
    before_show : function() {
      $("#jumpbox_menu").hide();
      $("#jumpbox_label").html("#{t(popup)}:");
      $("#jumpbox_label").show();
      crm.auto_complete("#{popup}", "#{related.class.to_s.downcase.pluralize}/#{related.id}");
    },
    after_show  : function() {
      $("#auto_complete_query").focus();
    }
  });