jquery validate syntax

jquery-validate.js

$('#contact_form').validate({
    debug: true,
    rules: {
        name: "required", // should be: "user[username]"
        email: { // should be: "user[email]"
            required: true,
            email: true
        }
    },
    messages: {
        name: "Please specify your name", // should be: "user[username]"
        email: { // should be: "user[email]"
            required: "We need your email address to contact you",
            email: "Your email address must be in the format of name@domain.com"
        }
    }
  });