function verif(){
	var ctrl = document.contactForm;
	var msg = "";
	// verif. si email correcte
	if (ctrl.nom.value == ""){
		msg += "- Please enter your name\n";
	}
	var mail = ctrl.email.value;
	var err = 0;
	if (mail.length > 1){
		mail2 = mail.split("@");
		mail3 = mail.split(".");
		if (mail2.length != 2 || mail3.length < 2 || mail2[0] == "" || mail2[1] == "" || mail3[0] == "" || mail3[1] == "" || mail.indexOf(" ") != -1){
			err = 1;
		}
		if (mail2.length > 1){
			mail4 = mail2[1].split(".");
			if (mail4.length != 2){
				err = 1;
			}
		}
		if (err){
			msg += "- Your email address is not valid\n";
		}
	}else{
		msg += "- Please enter your email address\n";
	}
	if (ctrl.phone.value == ""){
		msg += "- Please enter your phone numbers\n";
	}
	if (ctrl.message.value == ""){
		msg += "- Please enter your comments/questions\n";
	}
	// si erreur, message d'avertissement
	if (msg){
		alert(msg);
	}else{
		// sinon on envoye le formulaire
		ctrl.submit();
	}
}