function setOnZpravy_category() { // on 'clanky'
	if(document.form_zpravy.category.value != 'clanky') {
		document.getElementById('id_subcategory').style.display = 'none';
		document.getElementById('id_subcategory2').style.display = 'none';
	} else {
		document.getElementById('id_subcategory').style.display = 'block';
		document.getElementById('id_subcategory2').style.display = 'block';
	}
	if(document.form_zpravy.category.value != 'akce') {
		document.getElementById('id_event_time').style.display = 'none';
		document.getElementById('id_event_time2').style.display = 'none';
	} else {
		document.getElementById('id_event_time').style.display = 'block';
		document.getElementById('id_event_time2').style.display = 'block';
	}
}
//function setOnAnkety_otazky_typeAnsver() { // on 1
//	if(document.form_ankety_otazky.ankety_otazky_typeAnsver.value == 0) {
//		document.form_ankety_otazky.ankety_otazky_countAnswer.disabled = false;
//	} else {
//		document.form_ankety_otazky.ankety_otazky_countAnswer.disabled = true;
//	}
//}