una/studio/template/options_create_mix.html

<div class="bx-stg-create-mix">
    <div class="bx-stg-create-mix-cnt">
        __form__
        <script language="javascript">
            $(document).ready(function () {
                $("#__form_id__").ajaxForm({ 
                    dataType: "json",
                    beforeSubmit: function (formData, jqForm, options) {
                        bx_loading($("#__form_id__"), true);
                    },
                    success: function (oData) {
                        $(".bx-popup-applied:visible").dolPopupHide();
                        __js_object__.processResult(oData);
                    }
                });
            });
        </script>
    </div>
</div>