<!--
function validatemail()
{
	var email = document.CDOEMAIL.email.value;
	var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;
	 
	if (!email_reg_exp.test(email) || (email == "") || (email == "undefined"))
		{
           alert("Inserire un indirizzo email corretto.");
           document.CDOEMAIL.email.select();
			return false;
		}
}
//-->