gistfile1.txt

.on('success.field.fv', function(e, data) {
        var $parent = null;
        // If the field is empty
        if (data.element.val() === '') {
            $parent = data.element.parents('.form-group');

            // Remove the has-success class
            $parent.removeClass('has-success');

            // Hide the success icon
            data.element.data('fv.icon').hide();
        }
        if ($('.radio_button').is(':checked')) {
            $parent = data.element.parents(this);

            // Remove the has-success class
            $parent.removeClass('has-feedback');

            // Hide the success icon
            data.element.data('fv.icon').hide();
        }
    }).on('success.form.fv', function(e) {
        $('#btn-order').addClass('btn-disabled loading').text('Processing Order');
    }).on('err.form.fv', function(e) {
        // Get the FormValidation instance
        var fv = $(e.target).data('formValidation');
        // Get the first invalid field
        var $firstInvalidField = fv.getInvalidFields()[0];
        // Do something with first invalid field
        $firstInvalidField.focus()
    });