static function targetWindow() { static $trg = null; if ($trg === null) { $target = SB_Page::isMSIE() || SB_Page::isOPERA() ? '_main' : '_content'; if (isset($_REQUEST['target'])) { $newtarget = $_REQUEST['target']; if (preg_match('/^\\w+/', $newtarget)) { $target = $newtarget; } } $trg = $target; } return $trg; }