jquery.validation - how to ignore default values when validating mandatory fields

Question

I am using jquery validation plugin to validate a registration form.

Each text input field has instructions pre-filled as values in the input box

ex: for a

Answer 1

I think this is better:

jQuery.validator.addMethod("defaultInvalid", function(value, element) 
{
    return !(element.value == element.defaultValue);
});