'select_submit' => false, //submit on select: true/false
'async' => true, // select update via ajax (true) vs _page_body reload
'default' => '', // default value when $_POST is not set
'select_submit' => false, //submit on select: true/false
'async' => true, // select update via ajax (true) vs _page_body reload
'default' => '', // default value when $_POST is not set