// JavaScript Document

function showVoiceTeacher (objRadio)
{
	//var teacher_label = document.getElementById('teacher_label');
	var teacher       = document.getElementById('teacher');
	
	if (objRadio.value == 'yes') {
		//teacher_label.visibility = 'visible';
		//teacher_label.display = 'block';
		
		teacher.style.visibility = 'visible';
		teacher.style.display = 'block';
	}
	else {
		//teacher_label.visibility = 'hidden';
		//teacher_label.display = 'none';
		
		teacher.style.visibility = 'hidden';
		teacher.style.display = 'none';
	}
}