
<form method="post" action="{site_url}{addevent_formurl}">
    <div>
        <input type="submit" name="action" value="{lang_addevent}"{xhtml}>
        <input type="hidden" name="month" value="{cal_curmo_num}"{xhtml}>
        <input type="hidden" name="year" value="{cal_curyr_num}"{xhtml}>
        <input type="hidden" name="mode" value="{mode}"{xhtml}>
        <input type="hidden" name="view" value="addentry"{xhtml}>
    </div>
</form>
