public function urlBlankAvatar($iWidth, $iHeight, $mSex = '')
    {
        $sUrl = $this->urlBlankAvatarScheme();

        //  Sub in the values
        $sUrl = str_replace('{{width}}', $iWidth, $sUrl);
        $sUrl = str_replace('{{height}}', $iHeight, $sUrl);
        $sUrl = str_replace('{{sex}}', $mSex, $sUrl);

        return $sUrl;
    }