function sondAnswer()
{
	sondage = document.debat_form.debat;
	choosed = 0;
	for (i=0; i<sondage.length; i++)
	{
		if (sondage[i].checked == true)
		{
			choosed++;
		}
	}

	if (choosed == 0)
	{
	    alert("Veuillez choisir une réponse");
	    return false;
	}
    document.debat_form.submit();
}