Fix lỗi dispatcher.php và event.php trên PHP 5.3 and higher
There are a few plugins that are not compatible with PHP 5.3+ and Joomla 1.5x, and they may show up like the error messages below: Warning: Parameter 1 to plgContentJA_tabs:nPrepareContent() expected to be a reference, value given in /home/bienthuy/public_html/libraries/joomla/event/event.php on
