function mail_contact(form) {

	if (form.nom.value=="") {
    alert("Veuillez entrer votre nom.");
		form.nom.focus();
		return (false);
	}

	if (form.tel.value=="") {
    alert("Veuillez entrer votre numéro de téléphone.");
		form.tel.focus();
		return (false);
	}

	if (form.mail.value=="") {
    alert("Veuillez entrer votre adresse e-mail.");
		form.mail.focus();
		return (false);
	}

	var checkEmail = "@.";
	var checkStr = form.mail.value;
	var EmailValid = false;
	var EmailAt = false;
	var EmailPeriod = false;
	for (i = 0;  i < checkStr.length;  i++) {
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkEmail.length;  j++) {
			if (ch == checkEmail.charAt(j) && ch == "@") {
				EmailAt = true;
			}
			if (ch == checkEmail.charAt(j) && ch == ".") {
				EmailPeriod = true;
			}
			if (EmailAt && EmailPeriod) {
				break;
			}
			if (j == checkEmail.length) {
				break;
			}
		}
		// if both the @ and . were in the string
		if (EmailAt && EmailPeriod) {
			EmailValid = true
			break;
		}
	}
	if (!EmailValid) {
		alert("L'adresse électronique rentrée est invalide !");
		form.mail.focus();
		form.mail.select();
		return (false);
	}

	return true;
}


function mail_estimation(form) {

	if (form.nom.value=="") {
    alert("Veuillez entrer votre nom.");
		form.nom.focus();
		return (false);
	}

	if (form.tel.value=="") {
    alert("Veuillez entrer votre numéro de téléphone.");
		form.tel.focus();
		return (false);
	}

	if (form.mail.value=="") {
    alert("Veuillez entrer votre adresse e-mail.");
		form.mail.focus();
		return (false);
	}

	var checkEmail = "@.";
	var checkStr = form.mail.value;
	var EmailValid = false;
	var EmailAt = false;
	var EmailPeriod = false;
	for (i = 0;  i < checkStr.length;  i++) {
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkEmail.length;  j++) {
			if (ch == checkEmail.charAt(j) && ch == "@") {
				EmailAt = true;
			}
			if (ch == checkEmail.charAt(j) && ch == ".") {
				EmailPeriod = true;
			}
			if (EmailAt && EmailPeriod) {
				break;
			}
			if (j == checkEmail.length) {
				break;
			}
		}
		// if both the @ and . were in the string
		if (EmailAt && EmailPeriod) {
			EmailValid = true
			break;
		}
	}
	if (!EmailValid) {
		alert("L'adresse électronique rentrée est invalide !");
		form.mail.focus();
		form.mail.select();
		return (false);
	}

	return true;
}	

function mail_ami(form) {
	if (form.nom.value=="") {
    alert("Veuillez entrer votre nom.");
		form.nom.focus();
		return (false);
	}

	if (form.email_perso.value=="") {
    alert("Veuillez entrer votre adresse e-mail.");
		form.email_perso.focus();
		return (false);
	}

	var checkEmail = "@.";
	var checkStr = form.email_perso.value;
	var EmailValid = false;
	var EmailAt = false;
	var EmailPeriod = false;
	for (i = 0;  i < checkStr.length;  i++) {
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkEmail.length;  j++) {
			if (ch == checkEmail.charAt(j) && ch == "@") {
				EmailAt = true;
			}
			if (ch == checkEmail.charAt(j) && ch == ".") {
				EmailPeriod = true;
			}
			if (EmailAt && EmailPeriod) {
				break;
			}
			if (j == checkEmail.length) {
				break;
			}
		}
		// if both the @ and . were in the string
		if (EmailAt && EmailPeriod) {
			EmailValid = true
			break;
		}
	}
	if (!EmailValid) {
		alert("L'adresse électronique rentrée est invalide !");
		form.email_contact.focus();
		form.email_contact.select();
		return (false);
	}

if (form.email_contact.value=="") {
    alert("Veuillez entrer votre adresse e-mail.");
		form.email_contact.focus();
		return (false);
	}

	var checkEmail = "@.";
	var checkStr = form.email_contact.value;
	var EmailValid = false;
	var EmailAt = false;
	var EmailPeriod = false;
	for (i = 0;  i < checkStr.length;  i++) {
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkEmail.length;  j++) {
			if (ch == checkEmail.charAt(j) && ch == "@") {
				EmailAt = true;
			}
			if (ch == checkEmail.charAt(j) && ch == ".") {
				EmailPeriod = true;
			}
			if (EmailAt && EmailPeriod) {
				break;
			}
			if (j == checkEmail.length) {
				break;
			}
		}
		// if both the @ and . were in the string
		if (EmailAt && EmailPeriod) {
			EmailValid = true
			break;
		}
	return true;
	}
}

function mail_contact_en(form) {

	if (form.nom.value=="") {
    alert("Please enter your name.");
		form.nom.focus();
		return (false);
	}

	if (form.telephone.value=="") {
    alert("Please enter your phone number");
		form.telephone.focus();
		return (false);
	}

	if (form.mail.value=="") {
    alert("Please enter your e-mail");
		form.email.focus();
		return (false);
	}

	var checkEmail = "@.";
	var checkStr = form.mail.value;
	var EmailValid = false;
	var EmailAt = false;
	var EmailPeriod = false;
	for (i = 0;  i < checkStr.length;  i++) {
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkEmail.length;  j++) {
			if (ch == checkEmail.charAt(j) && ch == "@") {
				EmailAt = true;
			}
			if (ch == checkEmail.charAt(j) && ch == ".") {
				EmailPeriod = true;
			}
			if (EmailAt && EmailPeriod) {
				break;
			}
			if (j == checkEmail.length) {
				break;
			}
		}
		// if both the @ and . were in the string
		if (EmailAt && EmailPeriod) {
			EmailValid = true
			break;
		}
	}
	if (!EmailValid) {
		alert("The e-mail is invalid !");
		form.mail.focus();
		form.mail.select();
		return (false);
	}

	return true;
}