/**
 * matches US phone number format
 *
 * where the area code may not start with 1 and the prefix may not start with 1
 * allows '-' or ' ' as a separator and allows parens around area code
 * some people may want to put a '1' in front of their number
 *
 * 1(212)-999-2345 or
 * 212 999 2344 or
 * 212-999-0983
 *
 * but not
 * 111-123-5434
 * and not
 * 212 123 4567
 */
$.validator.addMethod("phoneUS", function(phone_number, element) {
	phone_number = phone_number.replace(/\s+/g, "");
	return this.optional(element) || phone_number.length > 9 &&
		phone_number.match(/^(\+?1-?)?(\([2-9]([02-9]\d|1[02-9])\)|[2-9]([02-9]\d|1[02-9]))-?[2-9]([02-9]\d|1[02-9])-?\d{4}$/);
}, "Please specify a valid phone number");