function validateTom( input ) {
	if( !input.name.value ) {
      alert(' Please enter your name. ');
      input.name.focus();
      input.name.select();
      return false;
    }
    if( !input.email.value ) {
      alert(' Please enter an email address, so we may reply. ');
      input.email.focus();
      input.email.select();
      return false;
    }
    if( input.email.value ) {
      var re_mail = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z])+$/;
      if( !re_mail.test( input.email.value ) ) {
        alert(' Please enter a valid email address. ');
        input.email.focus();
        input.email.select();
        return false;
      }
    } 
	return true;
  }