function update_external_advice_options(option) {

	var doc_element = document.getElementById('external_advice_options');	

	if(option == 1) {

		doc_element.style.display = '';

	} else {
		
		doc_element.style.display = 'none';
		
	}

}

function update_alert_system_options(option) {

	var doc_element = document.getElementById('alert_system_options');	

	if(option == 1) {

		doc_element.style.display = '';

	} else {
		
		doc_element.style.display = 'none';
		
	}

}

function update_certified_options(option) {

	var doc_element = document.getElementById('certified_options');	

	if(option == 1) {

		doc_element.style.display = '';

	} else {
		
		doc_element.style.display = 'none';
		
	}

}