$(document).ready(function () {

    jQuery.validator.setDefaults({
       errorClass: "field-validation-error",
       focusInvalid : true,
    });
    $.validator.addMethod("cityStateOrZipRequired",
        function (value, element) {
            return $("#cityState").val() != "" || $("#zipCode").val() != "";
        }, "Enter a zip code or a city/state combination.");

    jQuery.extend(jQuery.validator.messages, {
        required: " *"
    });
});