Fix jQuery Validate

gistfile1.js

// fix jquery validate reset form (this is a snippet that i created a while ago
    $.extend($.validator.prototype,
    {
        optional: function (element) {
            return !$.validator.methods.required.call(this, $.trim(element.value), element); // && "dependency-mismatch";
        },
        resetForm: function () {
            if ($.fn.resetForm) {
                $(this.currentForm).resetForm();
                // fix
                $(this.currentForm).find(".validation-summary-errors")
                    .removeClass("validation-summary-errors")
                    .addClass("validation-summary-valid")
                    .find('ul')
                    .empty()
                    .html('<li style="display:none" />');
                $(this.currentForm).find(".field-validation-error")
                    .empty();
                $(this.currentForm).find(".input-validation-error")
                    .removeClass("input-validation-error");
            }
            this.submitted = {};
            this.lastElement = null;
            this.prepareForm();
            this.hideErrors();
            this.elements().removeClass(this.settings.errorClass);
        },
        getLength: function (value, element) {
            switch (element.nodeName.toLowerCase()) {
                case 'select':
                    return $("option:selected", element).length;
                case 'input':
                    if (this.checkable(element)) {
                        var checkedCount = 0;
                        this.findByName(element.name).each(function () {
                            if ($(this).is(':checked')) {
                                checkedCount++;
                            }
                        });
                        return checkedCount;
                    }
                    //return this.findByName(element.name).filter(':checked').length;
            }
            return value.length;
        }
    });