Custom validators for use with jquery validate

gistfile1.js

jQuery.validator.addMethod("dateGreaterThan", function (value, element, params) {
    if (!/Invalid|NaN/.test(new Date(value))) {
        return new Date(value) > new Date($(params).val());
    }

    return isNaN(value) && isNaN($(params).val())
        || (Number(value) > Number($(params).val()));
}, '<br />Must be greater than {0}.');

jQuery.validator.addMethod('greaterThan', function (value, element, param) {
    return (parseInt(value) > parseInt(param));
}, '<br />Must be greater than {0}');

jQuery.validator.addMethod('lesserThan', function (value, element, params) {
    return (value < param);
}, '<br />Must be less than {0}');st row\'s value.');