$is = array( 'opera' => 0, 'ie' => 0, 'mozilla' => 0, 'firebird' => 0, 'firefox' => 0, 'camino' => 0, 'konqueror' => 0, 'safari' => 0, 'webkit' => 0, 'webtv' => 0, 'netscape' => 0, 'mac' => 0 );