function affiche_raisonsociale() {	
	i = document.forminfo.type_client.selectedIndex;
	type_c = document.forminfo.type_client.options[i].value;

	if(type_c == 'entreprise') {
		document.getElementById("raison").style.visibility = 'visible';
	} else {
		document.getElementById("raison").style.visibility = 'hidden';
	}
}