Just Last Field Accept Enter Button

HTML

<form action="" method="post" class="noEnterSubmit">
    <input type="text" name="name" />
    <input type="text" name="name2" />
    <input type="text" name="name3" />
    <input type="text" name="capcha" class="capcha" />
    <input type="submit" class="noEnterSubmit" value="refresh" />
    <input id="enter" type="submit" value="Submit" class="enterSubmit" />
</form>

JavaScript

jQuery('.noEnterSubmit input').keypress(function (e) {
    if (!jQuery(this).hasClass('capcha') && e.which == 13) {
        alert('here');
        e.preventDefault();
        return false;
    } else if (jQuery(this).hasClass('capcha') && e.which == 13) {
        alert('not here');
        jQuery('#enter').trigger('click');
    }
});