jQuery Validation - Multiple submit buttons on one asp.net form, different validation groups?

Question

I have an asp.net form with a login section and a register section. There are two submit buttons that correspond to the appropriate section, login or register. I am using

Answer 1

Keep track of the validation object and remove/replace rules directly. Works for me with v1.13.0

var validation = $('#form1').validate(); //Keep track of validation object

//Rule set 1
var validationRulesLogin = {
    headerEmail: {
        required: true,
        email: true
    },
    headerPassword: "required"
};
var validationMessagesLogin = {
    headerEmail: {
        required: "Please enter your email address.",
        email: "Not a valid email address."
    },
    headerPassword: "Please enter your password."
};

//Rule set 2
var validationRulesSignup = {
    signupEmail: {
        required: true,
        email: true
    },
    signupPassword: "required",
    signupPassword2: {
        equalTo: "#phBody_txtNewPassword"
    }
};
var validationMessagesSignup = {
    signupEmail: {
        required: "Please enter your email address.",
        email: "Not a valid email address."
    },
    signupPassword: "Please enter your password.",
    signupPassword2: "Passwords are not the same."
};

//Toggle rule sets on form focus, button click or other event.
function validatingLoginForm(){
    validation.resetForm();
    validation.settings.rules = validationRulesLogin;
    validation.settings.messages = validationMessagesLogin;
}
function validationSignupForm(){
    validation.resetForm();
    validation.settings.rules = validationRulesSignup;
    validation.settings.messages = validationMessagesSignup;
}