static function showAddEventSubForm($params = array())
{
$rand = mt_rand();
$params['begin'] = date("Y-m-d H:i:s", strtotime($params['begin']));
$params['end'] = date("Y-m-d H:i:s", strtotime($params['end']));
if ($item = getItemForItemtype($params['itemtype'])) {
$item->showForm('', array('from_planning_ajax' => true, 'begin' => $params['begin'], 'end' => $params['end'], 'formoptions' => "id='ajax_reminder{$rand}'"));
$callback = "\$('.ui-dialog-content').dialog('close');\n \$('#planning').fullCalendar('refetchEvents');\n displayAjaxMessageAfterRedirect();";
Html::ajaxForm("#ajax_reminder{$rand}", $callback);
}
}