public function Hidden($FieldName, $Attributes = FALSE) {
      $Return = '<input type="hidden"';
      $Return .= $this->_IDAttribute($FieldName, $Attributes);
      $Return .= $this->_NameAttribute($FieldName, $Attributes);
      $Return .= $this->_ValueAttribute($FieldName, $Attributes);
      $Return .= $this->_AttributesToString($Attributes);
      $Return .= ' />';
      return $Return;
   }