jQuery.validator.addMethod("phone", function(value, element) { 
  return this.required(element) || /^(?:\([2-9]\d{2}\)\ ?|[2-9]\d{2}(?:\-?|\ ?))[2-9]\d{2}[- ]?\d{4}$/.test(value); 
}, "Please enter a valid 10 digit phone number");