как правильно?

<div id="header">
            <div class="container_12">
                <div class="grid_3">
                    <div id="sitename"><a href="/"></a></div>
                </div>
                <div class="grid_9">
                    <?php if (!$inUser->id){ ?>
                        <div class="mod_user_menu">
                            <span class="register"><a href="/registration">Регистрация</a></span>
                            <span class="login"><a href="/login">Вход</a></span>
                        </div>
                    <?php } else { ?>
                        <?php cmsModule('header'); ?>
                    <?php } ?>
                </div>
            </div>
        </div>

<div id="header">
            <div class="container_12">
                <div class="grid_3">
                    <div id="sitename"><a href="/"></a></div>
                </div>
                <div class="grid_9" id="topmenu">
                    <?php cmsModule('topmenu'); ?>
                </div>
            </div>
        </div>