<div class="sys_tm_login_join">
    <button class="bx-btn bx-btn-primary" onclick="window.open ('<bx_url_root />join.php','_self');">
        <bx_text:_Join />
    </button>
    <button class="bx-btn" onclick="showPopupLoginForm(); return false;" >
        <bx_text:_Login />
    </button>
</div>