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Initial arkenfox user.js commit

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JorySeverijnse
2026-03-04 11:44:02 +01:00
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README.md
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### 🟪 user.js
A `user.js` is a configuration file that can control Firefox settings - for a more technical breakdown and explanation, you can read more in the [wiki](https://github.com/arkenfox/user.js/wiki/2.1-User.js)
### 🟩 the arkenfox user.js
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
The `arkenfox user.js` is a **template** which aims to provide as much privacy and enhanced security as possible, and to reduce tracking and fingerprinting as much as possible - while minimizing any loss of functionality and breakage (but it will happen).
Everyone, experts included, should at least read the [wiki](https://github.com/arkenfox/user.js/wiki), as it contains important information regarding a few `user.js` settings. There is also an [interactive current release](https://arkenfox.github.io/gui/), thanks to [icpantsparti2](https://github.com/icpantsparti2).
Note that we do *not* recommend connecting over Tor on Firefox. Use the [Tor Browser](https://www.torproject.org/projects/torbrowser.html.en) if your [threat model](https://2019.www.torproject.org/about/torusers.html) calls for it, or for accessing hidden services.
Also be aware that the `arkenfox user.js` is made specifically for desktop Firefox. Using it as-is in other Gecko-based browsers can be counterproductive, especially in the Tor Browser.
### 🟧 sitemap
- [releases](https://github.com/arkenfox/user.js/releases)
- [changelogs](https://github.com/arkenfox/user.js/issues?utf8=%E2%9C%93&q=is%3Aissue+label%3Achangelog)
- [wiki](https://github.com/arkenfox/user.js/wiki)
- [stickies](https://github.com/arkenfox/user.js/issues?q=is%3Aissue+is%3Aopen+label%3A%22sticky+topic%22)
- [diffs](https://github.com/arkenfox/user.js/issues?q=is%3Aissue+label%3Adiffs)
- [common questions and answers](https://github.com/arkenfox/user.js/issues?q=is%3Aissue+label%3Aanswered)
### 🟥 acknowledgments
Literally thousands of sources, references and suggestions. Many thanks, and much appreciated.
prefsCleaner.sh
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#!/usr/bin/env bash
## prefs.js cleaner for Linux/Mac
## author: @claustromaniac
## version: 2.1
## special thanks to @overdodactyl and @earthlng for a few snippets that I stol..*cough* borrowed from the updater.sh
## DON'T GO HIGHER THAN VERSION x.9 !! ( because of ASCII comparison in update_prefsCleaner() )
readonly CURRDIR=$(pwd)
## get the full path of this script (readlink for Linux, greadlink for Mac with coreutils installed)
SCRIPT_FILE=$(readlink -f "${BASH_SOURCE[0]}" 2>/dev/null || greadlink -f "${BASH_SOURCE[0]}" 2>/dev/null)
## fallback for Macs without coreutils
[ -z "$SCRIPT_FILE" ] && SCRIPT_FILE=${BASH_SOURCE[0]}
AUTOUPDATE=true
QUICKSTART=false
## download method priority: curl -> wget
DOWNLOAD_METHOD=''
if command -v curl >/dev/null; then
DOWNLOAD_METHOD='curl --max-redirs 3 -so'
elif command -v wget >/dev/null; then
DOWNLOAD_METHOD='wget --max-redirect 3 --quiet -O'
else
AUTOUPDATE=false
echo -e "No curl or wget detected.\nAutomatic self-update disabled!"
fi
fQuit() {
## change directory back to the original working directory
cd "${CURRDIR}"
[ "$1" -eq 0 ] && echo -e "\n$2" || echo -e "\n$2" >&2
exit $1
}
fUsage() {
echo -e "\nUsage: $0 [-ds]"
echo -e "
Optional Arguments:
-s Start immediately
-d Don't auto-update prefsCleaner.sh"
}
download_file() { # expects URL as argument ($1)
declare -r tf=$(mktemp)
$DOWNLOAD_METHOD "${tf}" "$1" &>/dev/null && echo "$tf" || echo '' # return the temp-filename or empty string on error
}
fFF_check() {
# there are many ways to see if firefox is running or not, some more reliable than others
# this isn't elegant and might not be future-proof but should at least be compatible with any environment
while [ -e lock ]; do
echo -e "\nThis Firefox profile seems to be in use. Close Firefox and try again.\n" >&2
read -r -p "Press any key to continue."
done
}
## returns the version number of a prefsCleaner.sh file
get_prefsCleaner_version() {
echo "$(sed -n '5 s/.*[[:blank:]]\([[:digit:]]*\.[[:digit:]]*\)/\1/p' "$1")"
}
## updates the prefsCleaner.sh file based on the latest public version
update_prefsCleaner() {
declare -r tmpfile="$(download_file 'https://raw.githubusercontent.com/arkenfox/user.js/master/prefsCleaner.sh')"
[ -z "$tmpfile" ] && echo -e "Error! Could not download prefsCleaner.sh" && return 1 # check if download failed
[[ $(get_prefsCleaner_version "$SCRIPT_FILE") == $(get_prefsCleaner_version "$tmpfile") ]] && return 0
mv "$tmpfile" "$SCRIPT_FILE"
chmod u+x "$SCRIPT_FILE"
"$SCRIPT_FILE" "$@" -d
exit 0
}
fClean() {
# the magic happens here
prefs="@@"
prefexp="user_pref[ ]*\([ ]*[\"']([^\"']+)[\"'][ ]*,"
while read -r line; do
if [[ "$line" =~ $prefexp && $prefs != *"@@${BASH_REMATCH[1]}@@"* ]]; then
prefs="${prefs}${BASH_REMATCH[1]}@@"
fi
done <<< "$(grep -E "$prefexp" user.js)"
while IFS='' read -r line || [[ -n "$line" ]]; do
if [[ "$line" =~ ^$prefexp ]]; then
if [[ $prefs != *"@@${BASH_REMATCH[1]}@@"* ]]; then
echo "$line"
fi
else
echo "$line"
fi
done < "$1" > prefs.js
}
fStart() {
if [ ! -e user.js ]; then
fQuit 1 "user.js not found in the current directory."
elif [ ! -e prefs.js ]; then
fQuit 1 "prefs.js not found in the current directory."
fi
fFF_check
mkdir -p prefsjs_backups
bakfile="prefsjs_backups/prefs.js.backup.$(date +"%Y-%m-%d_%H%M")"
mv prefs.js "${bakfile}" || fQuit 1 "Operation aborted.\nReason: Could not create backup file $bakfile"
echo -e "\nprefs.js backed up: $bakfile"
echo "Cleaning prefs.js..."
fClean "$bakfile"
fQuit 0 "All done!"
}
while getopts "sd" opt; do
case $opt in
s)
QUICKSTART=true
;;
d)
AUTOUPDATE=false
;;
esac
done
## change directory to the Firefox profile directory
cd "$(dirname "${SCRIPT_FILE}")"
# Check if running as root and if any files have the owner as root/wheel.
if [ "${EUID:-"$(id -u)"}" -eq 0 ]; then
fQuit 1 "You shouldn't run this with elevated privileges (such as with doas/sudo)."
elif [ -n "$(find ./ -user 0)" ]; then
printf 'It looks like this script was previously run with elevated privileges,
you will need to change ownership of the following files to your user:\n'
find . -user 0
fQuit 1
fi
[ "$AUTOUPDATE" = true ] && update_prefsCleaner "$@"
echo -e "\n\n"
echo " ╔══════════════════════════╗"
echo " ║ prefs.js cleaner ║"
echo " ║ by claustromaniac ║"
echo " ║ v2.1 ║"
echo " ╚══════════════════════════╝"
echo -e "\nThis script should be run from your Firefox profile directory.\n"
echo "It will remove any entries from prefs.js that also exist in user.js."
echo "This will allow inactive preferences to be reset to their default values."
echo -e "\nThis Firefox profile shouldn't be in use during the process.\n"
[ "$QUICKSTART" = true ] && fStart
echo -e "\nIn order to proceed, select a command below by entering its corresponding number.\n"
select option in Start Help Exit; do
case $option in
Start)
fStart
;;
Help)
fUsage
echo -e "\nThis script creates a backup of your prefs.js file before doing anything."
echo -e "It should be safe, but you can follow these steps if something goes wrong:\n"
echo "1. Make sure Firefox is closed."
echo "2. Delete prefs.js in your profile folder."
echo "3. Delete Invalidprefs.js if you have one in the same folder."
echo "4. Rename or copy your latest backup to prefs.js."
echo "5. Run Firefox and see if you notice anything wrong with it."
echo "6. If you do notice something wrong, especially with your extensions, and/or with the UI, go to about:support, and restart Firefox with add-ons disabled. Then, restart it again normally, and see if the problems were solved."
echo -e "If you are able to identify the cause of your issues, please bring it up on the arkenfox user.js GitHub repository.\n"
;;
Exit)
fQuit 0
;;
esac
done
fQuit 0
scratchpad-scripts/arkenfox-cleanup.js
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/***
This will reset the preferences that since FF91 have been
- removed from the arkenfox user.js
- deprecated by Mozilla but listed in the arkenfox user.js in the past
There is an archived version at https://github.com/arkenfox/user.js/issues/123
if you want the full list since jesus
Last updated: 14-August-2025
Instructions:
- [optional] close Firefox and backup your profile
- [optional] disable your network connection [1]
- start Firefox
- load about:config and press Ctrl+Shift+K to open the Web Console for about:config
- using about:config is important, so the script has the right permissions
- paste this script
- if you edited the list of prefs in the script, make sure the last pref does not have a trailing comma
- hit enter
- check the Info output to see which prefs were reset
- restart
- some prefs require a restart
- a restart will reapply your user.js
- [optional] re-enable your network connection
[1] Blocking Firefox from the internet ensures it cannot act on your reset preferences in the
period before you restart it, such as app and extension auto-updating, or downloading unwanted
components (GMP etc). It depends on what you're resetting and how long before you restart.
***/
(() => {
if ('undefined' === typeof(Services)) return alert('about:config needs to be the active tab!');
const aPREFS = [
/* DEPRECATED */
/* 129-140 */
'browser.shopping.experience2023.enabled', // 140
'browser.urlbar.pocket.featureGate', // 140
'media.ondevicechange.enabled', // 137
'webchannel.allowObject.urlWhitelist', // 132
/* 116-128 */
'browser.contentanalysis.default_allow', // 127
'browser.messaging-system.whatsNewPanel.enabled', // 126
'browser.ping-centre.telemetry', // 123
'dom.webnotifications.serviceworker.enabled', // 117
'javascript.use_us_english_locale', // 119
'layout.css.font-visibility.private', // 118
'layout.css.font-visibility.resistFingerprinting', // 116
'layout.css.font-visibility.standard', // 118
'layout.css.font-visibility.trackingprotection', // 118
'network.dns.skipTRR-when-parental-control-enabled', // 119
'permissions.delegation.enabled', // 118
'security.family_safety.mode', // 117
'widget.non-native-theme.enabled', // 127
/* 103-115 */
'browser.cache.offline.enable', // 115
'extensions.formautofill.heuristics.enabled', // 114
'network.cookie.lifetimePolicy', // 103 [technically removed in 104]
'privacy.clearsitedata.cache.enabled', // 114
'privacy.resistFingerprinting.testGranularityMask', // 114
'security.pki.sha1_enforcement_level', // 103
/* 92-102 */
'browser.urlbar.suggest.quicksuggest', // 95
'dom.securecontext.whitelist_onions', // 97
'dom.storage.next_gen', // 102
'network.http.spdy.enabled', // 100
'network.http.spdy.enabled.deps',
'network.http.spdy.enabled.http2',
'network.http.spdy.websockets',
'layout.css.font-visibility.level', // 94
'security.ask_for_password', // 102
'security.csp.enable', // 99
'security.password_lifetime', // 102
'security.ssl3.rsa_des_ede3_sha', // 93
/* REMOVED */
/* 129-140 */
'dom.securecontext.allowlist_onions',
'network.http.referer.hideOnionSource',
'privacy.clearOnShutdown.cache',
'privacy.clearOnShutdown.cookies',
'privacy.clearOnShutdown.downloads',
'privacy.clearOnShutdown.formdata',
'privacy.clearOnShutdown.history',
'privacy.clearOnShutdown.offlineApps',
'privacy.clearOnShutdown.sessions',
'privacy.cpd.cache',
'privacy.cpd.cookies',
'privacy.cpd.formdata',
'privacy.cpd.history',
'privacy.cpd.offlineApps',
'privacy.cpd.sessions',
/* 116-128 */
'browser.fixup.alternate.enabled',
'browser.taskbar.previews.enable',
'browser.urlbar.dnsResolveSingleWordsAfterSearch',
'geo.provider.network.url',
'geo.provider.network.logging.enabled',
'geo.provider.use_gpsd',
'media.gmp-widevinecdm.enabled',
'network.protocol-handler.external.ms-windows-store',
'privacy.partition.always_partition_third_party_non_cookie_storage',
'privacy.partition.always_partition_third_party_non_cookie_storage.exempt_sessionstorage',
'privacy.partition.serviceWorkers',
/* 103-115 */
'beacon.enabled',
'browser.startup.blankWindow',
'browser.newtab.preload',
'browser.newtabpage.activity-stream.feeds.discoverystreamfeed',
'browser.newtabpage.activity-stream.feeds.snippets',
'browser.region.network.url',
'browser.region.update.enabled',
'browser.search.region',
'browser.ssl_override_behavior',
'browser.tabs.warnOnClose',
'devtools.chrome.enabled',
'dom.disable_beforeunload',
'dom.disable_open_during_load',
'dom.netinfo.enabled',
'dom.vr.enabled',
'extensions.formautofill.addresses.supported',
'extensions.formautofill.available',
'extensions.formautofill.creditCards.available',
'extensions.formautofill.creditCards.supported',
'middlemouse.contentLoadURL',
'network.http.altsvc.oe',
/* 92-102 */
'browser.urlbar.trimURLs',
'dom.caches.enabled',
'dom.storageManager.enabled',
'dom.storage_access.enabled',
'dom.targetBlankNoOpener.enabled',
'network.cookie.thirdparty.sessionOnly',
'network.cookie.thirdparty.nonsecureSessionOnly',
'privacy.firstparty.isolate.block_post_message',
'privacy.firstparty.isolate.restrict_opener_access',
'privacy.firstparty.isolate.use_site',
'privacy.window.name.update.enabled',
'security.insecure_connection_text.enabled',
/* IMPORTANT: last active pref must not have a trailing comma */
/* reset parrot: check your open about:config after running the script */
'_user.js.parrot'
];
console.clear();
let c = 0;
for (const sPname of aPREFS) {
if (Services.prefs.prefHasUserValue(sPname)) {
Services.prefs.clearUserPref(sPname);
if (!Services.prefs.prefHasUserValue(sPname)) {
console.info('reset', sPname);
c++;
} else console.warn('failed to reset', sPname);
}
}
focus();
const d = (c==1) ? ' pref' : ' prefs';
alert(c ? 'successfully reset ' + c + d + "\n\nfor details check the console" : 'nothing to reset');
return 'all done';
})();
scratchpad-scripts/troubleshooter.js
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/*** arkenfox user.js troubleshooter.js v1.6.3 ***/
(function() {
if ("undefined" === typeof(Services)) return alert('about:config needs to be the active tab!');
const aPREFS = [
/* known culprits */
'network.cookie.cookieBehavior',
'network.http.referer.XOriginPolicy',
'privacy.firstparty.isolate',
'privacy.resistFingerprinting',
'security.mixed_content.block_display_content',
'svg.disabled',
/* Storage + Cache */
'browser.cache.offline.enable',
'dom.storage.enabled',
'dom.storageManager.enabled',
/* Workers, Web + Push Notifications */
'dom.caches.enabled',
'dom.push.connection.enabled',
'dom.push.enabled',
'dom.push.serverURL',
'dom.serviceWorkers.enabled',
'dom.webnotifications.enabled',
'dom.webnotifications.serviceworker.enabled',
/* Fonts */
'browser.display.use_document_fonts',
'font.blacklist.underline_offset',
'gfx.font_rendering.graphite.enabled',
'gfx.font_rendering.opentype_svg.enabled',
'layout.css.font-loading-api.enabled',
/* Misc */
'browser.link.open_newwindow.restriction',
'canvas.capturestream.enabled',
'dom.event.clipboardevents.enabled',
'dom.event.contextmenu.enabled',
'dom.IntersectionObserver.enabled',
'dom.popup_allowed_events',
'full-screen-api.enabled',
'intl.accept_languages',
'javascript.options.asmjs',
'javascript.options.wasm',
'permissions.default.shortcuts',
/* Hardware */
'dom.vr.enabled',
'media.ondevicechange.enabled',
/* Audio + Video */
'dom.webaudio.enabled',
'media.autoplay.default', // FF63+
'media.autoplay.blocking_policy', // FF78+
/* Forms */
'browser.formfill.enable',
'signon.autofillForms',
'signon.formlessCapture.enabled',
/* HTTPS */
'security.cert_pinning.enforcement_level',
'security.family_safety.mode',
'security.OCSP.require',
'security.pki.sha1_enforcement_level',
'security.ssl.require_safe_negotiation',
'security.ssl.treat_unsafe_negotiation_as_broken',
'security.ssl3.dhe_rsa_aes_128_sha',
'security.ssl3.dhe_rsa_aes_256_sha',
'security.ssl3.ecdhe_ecdsa_aes_128_sha',
'security.ssl3.ecdhe_rsa_aes_128_sha',
'security.ssl3.rsa_aes_128_sha',
'security.ssl3.rsa_aes_256_sha',
'security.ssl3.rsa_des_ede3_sha',
'security.tls.enable_0rtt_data',
'security.tls.version.max',
'security.tls.version.min',
/* Plugins + Flash */
'plugin.default.state',
'plugin.state.flash',
/* unlikely to cause problems */
'dom.popup_maximum',
'geo.provider.network.url',
'layout.css.visited_links_enabled',
'mathml.disabled',
'network.auth.subresource-http-auth-allow',
'network.http.redirection-limit',
'network.protocol-handler.external.ms-windows-store',
'privacy.trackingprotection.enabled',
'security.data_uri.block_toplevel_data_uri_navigations',
'privacy.window.name.update.enabled', // FF82+
'last.one.without.comma'
]
// any runtime-set pref that everyone will have and that can be safely reset
const oFILLER = { type: 64, name: 'app.update.lastUpdateTime.browser-cleanup-thumbnails', value: 1580000000 };
function getMyList(arr) {
const aRet = [];
for (const sPname of arr) {
if (Services.prefs.prefHasUserValue(sPname)) {
const ptype = Services.prefs.getPrefType(sPname);
switch (ptype) {
case 32: // string (see https://dxr.mozilla.org/mozilla-central/source/modules/libpref/nsIPrefBranch.idl#31)
aRet.push({'type':ptype,'name':sPname,'value':Services.prefs.getCharPref(sPname)});
break;
case 64: // int
aRet.push({'type':ptype,'name':sPname,'value':Services.prefs.getIntPref(sPname)});
break;
case 128: // boolean
aRet.push({'type':ptype,'name':sPname,'value':Services.prefs.getBoolPref(sPname)});
break;
default:
console.log("error detecting pref-type for '"+sPname+"' !");
}
}
}
return aRet;
}
function reapply(arr) {
for (const oPref of arr) {
switch (oPref.type) {
case 32: // string
Services.prefs.setCharPref(oPref.name, oPref.value);
break;
case 64: // int
Services.prefs.setIntPref(oPref.name, oPref.value);
break;
case 128: // boolean
Services.prefs.setBoolPref(oPref.name, oPref.value);
break;
default:
console.log("error re-appyling value for '"+oPref.name+"' !"); // should never happen
}
}
}
function myreset(arr) {
for (const oPref of arr) Services.prefs.clearUserPref(oPref.name);
}
function resetAllMatchingDefault(arr) {
const aTmp = getMyList(arr);
myreset(aTmp);
reapply(aTmp);
}
function _main(aALL) {
const _h = (arr) => Math.ceil(arr.length/2);
let aTmp = aALL, aDbg = aALL;
reapply(aALL);
myreset(aTmp.slice(0, _h(aTmp)));
while (aTmp.length) {
alert('NOW TEST AGAIN !');
if (confirm('if the problem still exists click OK, otherwise click Cancel.')) {
aTmp = aTmp.slice(_h(aTmp));
} else {
aTmp = aTmp.slice(0, _h(aTmp));
aDbg = aTmp; // update narrowed down list
if (aDbg.length == 1) break;
}
reapply(aALL);
myreset(aTmp.slice(0, _h(aTmp))); // reset half of the remaining prefs
}
reapply(aALL);
if (aDbg.length == 1) return alert("narrowed it down to:\n\n"+aDbg[0].name+"\n");
if (aDbg.length == aALL.length) {
const msg = "Failed to narrow it down beyond the initial "+aALL.length+" prefs. The problem is most likely caused by at least 2 prefs!\n\n" +
"Either those prefs are too far apart in the list or there are exactly 2 culprits and they just happen to be at the wrong place.\n\n" +
"In case it's the latter, the script can add a dummy pref and you can try again - Try again?";
if (confirm(msg)) return _main([...aALL, oFILLER]);
} else if (aDbg.length > 10 && confirm("Narrowed it down to "+aDbg.length+" prefs. Try narrowing it down further?")) {
return _main(aDbg.reverse());
}
alert("Narrowed it down to "+ aDbg.length.toString() +" prefs, check the console ...");
console.log('The problem is caused by 2 or more of these prefs:');
for (const oPref of aDbg) console.log(oPref.name);
}
resetAllMatchingDefault(aPREFS); // reset user-set prefs matching FFs default value
const aBAK = getMyList(aPREFS);
//console.log(aBAK.length, "user-set prefs from our list detected and their values stored.");
const sMsg = "all detected prefs reset.\n\n" +
"!! KEEP THIS PROMPT OPEN AND TEST THE SITE IN ANOTHER TAB !!\n\n" +
"IF the problem still exists, this script can't help you - click Cancel to re-apply your values and exit.\n\n" +
"Click OK if your problem is fixed.";
focus();
myreset(aBAK);
if (!confirm(sMsg)) {
reapply(aBAK);
return;
}
_main(aBAK);
})();
user.js
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user_pref("_user.js.parrot", "START: Oh yes, the Norwegian Blue... what's wrong with it?");
user_pref("browser.aboutConfig.showWarning", false);
user_pref("_user.js.parrot", "0100 syntax error: the parrot's dead!");
user_pref("browser.startup.page", 0);
user_pref("browser.startup.homepage", "chrome://browser/content/blanktab.html");
user_pref("browser.newtabpage.enabled", false);
user_pref("browser.newtabpage.activity-stream.showSponsored", false);
user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false);
user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false);
user_pref("browser.newtabpage.activity-stream.default.sites", "");
user_pref("_user.js.parrot", "0200 syntax error: the parrot's definitely deceased!");
user_pref("geo.provider.ms-windows-location", false);
user_pref("geo.provider.use_corelocation", false);
user_pref("geo.provider.use_geoclue", false);
user_pref("_user.js.parrot", "0300 syntax error: the parrot's not pinin' for the fjords!");
user_pref("extensions.getAddons.showPane", false);
user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);
user_pref("browser.discovery.enabled", false);
user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
user_pref("browser.newtabpage.activity-stream.telemetry", false);
user_pref("app.shield.optoutstudies.enabled", false);
user_pref("app.normandy.enabled", false);
user_pref("app.normandy.api_url", "");
user_pref("breakpad.reportURL", "");
user_pref("browser.tabs.crashReporting.sendReport", false);
user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false);
user_pref("captivedetect.canonicalURL", "");
user_pref("network.captive-portal-service.enabled", false);
user_pref("network.connectivity-service.enabled", false);
user_pref("_user.js.parrot", "0400 syntax error: the parrot's passed on!");
user_pref("browser.safebrowsing.downloads.remote.enabled", false);
user_pref("_user.js.parrot", "0600 syntax error: the parrot's no more!");
user_pref("network.prefetch-next", false);
user_pref("network.dns.disablePrefetch", true);
user_pref("network.dns.disablePrefetchFromHTTPS", true);
user_pref("network.predictor.enabled", false);
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user_pref("_user.js.parrot", "0700 syntax error: the parrot's given up the ghost!");
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user_pref("_user.js.parrot", "7000 syntax error: the parrot's pushing up daisies!");
user_pref("_user.js.parrot", "8000 syntax error: the parrot's crossed the Jordan");
user_pref("_user.js.parrot", "8500 syntax error: the parrot's off the twig!");
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user_pref("_user.js.parrot", "9000 syntax error: the parrot's cashed in 'is chips!");
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user_pref("_user.js.parrot", "9999 syntax error: the parrot's shuffled off 'is mortal coil!");
user_pref("_user.js.parrot", "SUCCESS: No no he's not dead, he's, he's restin'!");