[Typo3] link target for sp_directory

[tapio]

Hi

I use sp_directory. I would like to redefine
for 'WWW' link target.

I makes links using this function

         function makeHTTPLink($url,$name)      {
                 $this->typolink_conf["parameter"] = $url;
                 #$this->typolink_conf["target."] = "_blank";
		#$this->conf['target.']="_blank";
                 $code = $this->cObj->typolink($name, $this->typolink_conf);

	return $code;
         }

commented didnt't work.
The function 'typolink' has been defined in a core file 
(/tslib/class.tslib_content.php)

Tapio Markula