function verifForm(){
	var question1 = document.forms["form_questionnaire"].elements["question1"];
	var okQuestion1 = false;
	for (var i = 0; i < question1.length; i++) {
		if (question1[i].checked) {
			okQuestion1 = true;
		}
	}
	
	var question2 = document.forms["form_questionnaire"].elements["question2"];
	var okQuestion2 = false;
	for (var i = 0; i < question2.length; i++) {
		if (question2[i].checked) {
			okQuestion2 = true;
		}
	}
	
	var question3 = document.forms["form_questionnaire"].elements["question3"];
	var okQuestion3 = false;
	for (var i = 0; i < question3.length; i++) {
		if (question3[i].checked) {
			okQuestion3 = true;
		}
	}
	
	if(okQuestion1 == false || okQuestion2 == false || okQuestion3 == false){
		document.getElementById('message_erreur').style.display = 'block';
		return false;
	}else{
		return true;
	}
}


function verifQuizForm(){
	var question = document.forms["form_quiz"].elements["question1"];
	var okQuestion = false;
	for (var i = 0; i < question.length; i++) {
		if (question[i].checked) {
			okQuestion = true;
		}
	}
	
	if(okQuestion == false){
		document.getElementById('message_erreur').style.display = 'block';
		return false;
	}else{
		return true;
	}
}