Validate a Canadian postal code with JQuery Validation

gistfile1.js

// Validate a Canadian postal code with JQuery Validation
// Use with http://docs.jquery.com/Plugins/Validation

// Adding the method
jQuery.validator.addMethod("cdnPostal", function(postal, element) {
    return this.optional(element) || 
    postal.match(/[a-zA-Z][0-9][a-zA-Z](-| |)[0-9][a-zA-Z][0-9]/);
}, "Please specify a valid postal code.");

// Using the new rule
$("#form").validate({
    rules: {
        postal_code: {
            required: true,
            cdnPostal: true
        }
    }
});

Its really helped me a lot. Thank you!!