var sendForm = function ($form, url, data) {
    data = data || {};
    url = url || $form.attr('action') || '/';
    $form.find('input, select, textarea').each(function () {
        data[$(this).attr('name')] = $(this).val();
    });
    $.post(url, data);
}

$('#contact-form').submit(function (ev) {
    ev.preventDefault();
    sendForm($(this));
});