jQuery.extend(jQuery.validator.methods, {
    date: function (value, element) {
        return this.optional(element) || /^\d\d?[\.]\d\d?[\.]\d\d\d?\d?$/.test(value);
    },
    number: function (value, element) {
        return this.optional(element) || /^-?(?:\d+|\d{1,3}(?:[\s\.]\d{3})+)(?:,\d+)?$/.test(value);
    },
    range: function (value, element, param) {
        var globalizedValue = value.replace(".", "").replace(",", ".");
        return this.optional(element) || (globalizedValue >= param[0] && globalizedValue <= param[1]);
    }
});