crm.fsf.org/20131203/files/sites/all/modules-old/civicrm/bower_components/jquery-validation/src/additional/postalcodeIT.js

   1 /* Matches Italian postcode (CAP) */
   2 $.validator.addMethod("postalcodeIT", function(value, element) {
   3         return this.optional(element) || /^\d{5}$/.test(value);
   4 }, "Please specify a valid postal code");