code: function InlineImageExists() {
          $result = false;
          for($i = 0; $i < count($this->attachment); $i++)
          {
              if($this->attachment[$i][6] == "inline")
              {
                  $result = true;
                  break;
              }
          }
          
          return $result;
      }
docs: Returns true if an inline attachment is present.
  @access private
  @return bool