Debug Override plugin, disable ExpressionEngine template debugging from a template

pi.debug_override.php

<?php

$plugin_info = array(
  'pi_name' => 'debug_override',
  'pi_version' =>'1.0',
  'pi_author' =>'GDmac',
  'pi_author_url' => '',
  'pi_description' => '',
  'pi_usage' => '{exp:debug_override override="all|ajax"} default is override on ajax calls',
  );

class debug_override {

    public function __construct()
    {
        $this->EE =& get_instance();

	    $override = $this->EE->TMPL->fetch_param('override', 'ajax');
	
		// no debugging or output-profiler for ajax
		if( ($override=='all') || ($override=='ajax' && AJAX_REQUEST))
		{
			$this->EE->TMPL->debugging = FALSE;

			$this->EE->output->enable_profiler(FALSE);
		}

    }

}