//controlla se la mail è valida
function checkMail(mailId){
var status = false;
var mail = mailId;
var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
//document.myform.email1.
     if (mail.value.search(emailRegEx) == -1) {
          return "L'email inserita non e' valida";
     }
/*     else if (document.myform.email1.value != document.myform.email2.value) {
          alert("Email addresses do not match.  Please retype them to make sure they are the same.");
     }
*/
     else {
          return true;
     }

}