$(document).ready(function() {
    $("#contactFormMain").validate({
        debug: false,
        rules: {
            fn: "required",
            ln: "required",
            email: {
                required: true,
                email: true
            }
        },
        messages: {
            fn: "Your first name is required.",
            ln: "Your last name is required.",
            email: "A valid email address is required."
        },
        submitHandler: function(form) {
            // do other stuff for a valid form
            $.post('http://vanblk.com/contactFormMain.php', $("#contactFormMain").serialize(),
            function(data) {
                $('#message').html("Your information has been received. Thank you for contacting us.");
				$("#contactFormMain").hide();
            });
        }
    });
});