function contact() {
	var x = document.getElementById("email").value;
	var error = !isEmail(x);
	error = error || !document.getElementById("name").value;
	error = error || !document.getElementById("comments").value;
	error = error || (document.getElementById("country").value == "0");

	if (!error) {
		document.getElementById("contact").submit();
	} else {
		alert('Por favor, llene todos los campos.\nPlease, complete all fields.\nMerci de compléter tous les champs.');
	}
}

function isEmail(str)
{
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	return filter.test(str);
}