function check_email()
{ 
  if (document.forms['newsletter'].email.value.indexOf('@',0) == -1 || 
    document.forms['newsletter'].email.value.indexOf('.',0) == -1) 
      return false; 
  else 
    return true; 
}

function newsletter_check()
{

  if (document.newsletter.email.value == '')
  {
    alert(emailEmpty);
    document.forms['newsletter'].email.focus();
	return false;
  }

  
  if ( check_email() == false)
  {
    alert(emailError);
    document.forms['newsletter'].email.focus();
	return false;
  }

  return true;
}