// check subscribe e-mail form on wrong e-mal address
function form_check()
{
  var complete=true;
  var e_mail=document.AddEmailForm.UserEMail.value;
  if ((((e_mail.indexOf("@") == -1) || (e_mail.indexOf(".")== -1) || (e_mail == "your email...") ||(e_mail == null))))
  {
    alert("The email address you entered is not valid, please type it again.");
    complete=false;
  }
  return complete;
}