public static function init () {
		if (! isset ($_SERVER['HTTP_USER_AGENT']) 
			|| preg_match ('{\bFirePHP/\d+\.\d+\b}', $_SERVER['HTTP_USER_AGENT'])
			|| isset ($_SERVER['HTTP_X_FIREPHP_VERSION'])) {

			header ('X-Wf-Protocol-1: http://meta.wildfirehq.org/Protocol/JsonStream/0.2');
			header ('X-Wf-1-Plugin-1: http://meta.firephp.org/Wildfire/Plugin/FirePHP/Library-FirePHPCore/0.3');
			header ('X-Wf-1-Structure-1: http://meta.firephp.org/Wildfire/Structure/FirePHP/FirebugConsole/0.1');
		}

		return function ($info) {
			header (FirePHP::format_header ($info));
		};
	}