function Form_Validator(theForm)
{
	if (theForm.sur.value == "") {
		alert("Please enter a value for the \"Family name\" field.");
		theForm.sur.focus();
		return (false);
	}

	if (theForm.e_mail.value == "") {
		alert("Please enter your email address.");
		theForm.e_mail.focus();
		return (false);
	}

	var pattern = /.+@.+(\.).+/; 
	if (theForm.e_mail.value.search(pattern) == -1) { 
		alert("Please enter a valid E-mail address."); 
		theForm.e_mail.focus(); 
		return (false);
	}
	return (true);
}