This looks wrong: koha-tmpl/intranet-tmpl/prog/en/modules/admin/cash_registers.tt: $(".dt_button_clear_filter").addClass("disabled"); koha-tmpl/intranet-tmpl/prog/en/modules/admin/cash_registers.tt: $(".dt_button_clear_filter").removeClass("disabled"); koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt: $(".dt_button_clear_filter").addClass("disabled"); koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt: $(".dt_button_clear_filter").removeClass("disabled"); koha-tmpl/intranet-tmpl/prog/en/modules/tools/additional-contents.tt: $(".dt_button_clear_filter").on("click", function(){