diff --git a/js/info.js b/js/info.js
index b5b7c8b..4b5ec9c 100644
--- a/js/info.js
+++ b/js/info.js
@@ -123,7 +123,6 @@ function renderBlacklistDetails() {
     var blacklist;
     var liTemplate = $('#remoteBlacklistDetails', ul);
     var li, a;
-    var date = new Date();
     while ( i-- ) {
         blacklist = blacklists[keys[i]];
         li = liTemplate.clone();
diff --git a/js/popup.js b/js/popup.js
index e6791f8..548a101 100644
--- a/js/popup.js
+++ b/js/popup.js
@@ -531,13 +531,12 @@ function renderMatrixCellSubdomain(cell, domain, subomain) {
 }
 
 function renderMatrixCellType(cell, hostname, type, stats) {
-    var cell = $(cell);
+    cell = $(cell);
     cell.prop({filterType: type, filterDomain: hostname})
         .addClass(stats.temporaryColor);
     if ( stats.count ) {
         cell.text(stats.count);
     }
-    return cell;
 }
 
 function renderMatrixCellTypes(cells, hostname, stats) {
@@ -571,7 +570,7 @@ function makeMatrixRowSubdomain(domain, subdomain) {
 /******************************************************************************/
 
 function renderMatrixMetaCellType(cell, count) {
-    var cell = $(cell);
+    cell = $(cell);
     cell.addClass('rpt');
     if ( count ) {
         cell.text(count);
diff --git a/js/start.js b/js/start.js
index afe205b..1d7ee24 100644
--- a/js/start.js
+++ b/js/start.js
@@ -107,9 +107,9 @@ function onUpdatedTabsHandler(tabId, changeInfo, tab) {
         return;
     }
 
-    // Chrome webstore can't be injected with foreign code following is to
+    // Chrome webstore can't be injected with foreign code, following is to
     // avoid error message.
-    if ( pageStats.ignore ) {
+    if ( HTTPSB.excludeRegex.test(tab.url) ) {
         return;
     }
 
@@ -146,6 +146,27 @@ chrome.tabs.onRemoved.addListener(onRemovedTabHandler);
 
 /******************************************************************************/
 
+// Could this fix:
+// https://github.com/gorhill/httpswitchboard/issues/53
+// ?
+
+function onBeforeNavigateCallback(details) {
+    if ( details.url.search(/^https?:\/\//) < 0 ) {
+        return;
+    }
+    if ( HTTPSB.excludeRegex.test(details.url) ) {
+        return;
+    }
+    // Might help.
+    //   https://github.com/gorhill/httpswitchboard/issues/35
+    var hostname = getHostnameFromURL(details.url);
+    setJavascript(hostname, HTTPSB.whitelisted(details.url, 'script', hostname));
+}
+
+chrome.webNavigation.onBeforeNavigate.addListener(onBeforeNavigateCallback);
+
+/******************************************************************************/
+
 // Load user settings
 
 load();
diff --git a/js/storage.js b/js/storage.js
index 5281687..c9068a5 100644
--- a/js/storage.js
+++ b/js/storage.js
@@ -129,10 +129,10 @@ function loadUserLists() {
             // Sensible defaults
             httpsb.whitelistTemporarily('*', 'image', '*');
             httpsb.whitelistPermanently('*', 'image', '*');
-            httpsb.blacklistTemporarily('*', 'object', '*')
-            httpsb.blacklistPermanently('*', 'object', '*')
-            httpsb.blacklistTemporarily('*', 'sub_frame', '*')
-            httpsb.blacklistPermanently('*', 'sub_frame', '*')
+            httpsb.blacklistTemporarily('*', 'object', '*');
+            httpsb.blacklistPermanently('*', 'object', '*');
+            httpsb.blacklistTemporarily('*', 'sub_frame', '*');
+            httpsb.blacklistPermanently('*', 'sub_frame', '*');
         }
 
         // rhill 2013-09-23: ok, there is no point in blacklisting
diff --git a/js/tab.js b/js/tab.js
index 65e0c23..7b31b86 100644
--- a/js/tab.js
+++ b/js/tab.js
@@ -390,14 +390,10 @@ function smartReloadTab(tabId) {
     }
     var newState = computeTabState(tabId);
     if ( getStateHash(newState) != getStateHash(pageStats.state) ) {
-        // https://github.com/gorhill/httpswitchboard/issues/35
         // Appears to help.
+        //   https://github.com/gorhill/httpswitchboard/issues/35
         var hostname = getHostnameFromURL(pageUrl);
-        var blocked = HTTPSB.blacklisted(pageUrl, 'script', hostname);
-        chrome.contentSettings.javascript.set({
-            primaryPattern: '*://' + hostname + '/*',
-            setting: blocked ? 'block' : 'allow'
-            });
+        setJavascript(hostname, HTTPSB.whitelisted(pageUrl, 'script', hostname));
         // console.debug('reloaded content of tab id %d', tabId);
         // console.debug('old="%s"\nnew="%s"', getStateHash(pageStats.state), getStateHash(newState));
         pageStats.state = newState;
diff --git a/js/traffic.js b/js/traffic.js
index 79ec55e..7812b88 100644
--- a/js/traffic.js
+++ b/js/traffic.js
@@ -186,10 +186,7 @@ function webRequestHandler(details) {
     // hostname, disable scripts for this hostname, necessary since inline
     // script tags are not passed through web request handler.
     if ( isMainFrame ) {
-        chrome.contentSettings.javascript.set({
-            primaryPattern: '*://' + hostname + '/*',
-            setting: httpsb.blacklisted(pageURL, 'script', hostname) ? 'block' : 'allow'
-            });
+        setJavascript(hostname, httpsb.whitelisted(pageURL, 'script', hostname));
         // when the tab is updated, we will check if page has at least one
         // script tag, this takes care of inline scripting, which doesn't
         // generate 'script' type web requests.
diff --git a/js/utils.js b/js/utils.js
index 3339e29..f040d74 100644
--- a/js/utils.js
+++ b/js/utils.js
@@ -98,4 +98,38 @@ function getParentHostnameFromHostname(hostname) {
     return subdomain.slice(dot+1) + '.' + domain;
 }
 
+/******************************************************************************/
+
+// Enable/disable javascript for a specific hostname.
+
+function setJavascriptCallback(windows, hostname, setting) {
+    // Need to do this to avoid "You cannot set a preference with scope
+    // 'incognito_session_only' when no incognito window is open."
+    var i = windows.length;
+    while ( i-- ) {
+        if ( windows[i].incognito ) {
+            chrome.contentSettings.javascript.set({
+                scope: 'incognito_session_only',
+                primaryPattern: hostname,
+                setting: setting
+            });
+            break;
+        }
+    }
+}
+
+function setJavascript(hostname, state) {
+    var hostname = '*://' + hostname + '/*';
+    var setting = state ? 'allow' : 'block';
+    // https://github.com/gorhill/httpswitchboard/issues/53
+    // Until chromium fixes:
+    //   https://code.google.com/p/chromium/issues/detail?id=319400
+    chrome.contentSettings.javascript.set({
+        primaryPattern: hostname,
+        setting: setting
+    });
+    chrome.windows.getAll(function(windows) {
+        setJavascriptCallback(windows, hostname, setting);
+    });
+}
 
diff --git a/manifest.json b/manifest.json
index e71f6c8..66d8de8 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
     "manifest_version": 2,
     "name": "HTTP Switchboard",
     "short_name": "HTTPSB",
-    "version": "0.5.4",
+    "version": "0.5.5",
     "description": "Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.",
     "icons": {
         "128": "icon_128.png"
@@ -26,6 +26,7 @@
         "cookies",
         "storage",
         "tabs",
+        "webNavigation",
         "webRequest",
         "webRequestBlocking",
         "<all_urls>"
diff --git a/settings.html b/settings.html
index a63385b..36200f3 100644
--- a/settings.html
+++ b/settings.html
@@ -24,7 +24,7 @@ <h1>HTTP Switchboard &mdash; Settings</h1>
 
 <div>
     Under construction.
-    <h2>Display</h3>
+    <h2>Display</h2>
     <div>
         Matrix text size:
         <ul style="list-style:none">
@@ -33,7 +33,7 @@ <h2>Display</h3>
         </ul>
         </div>
 
-    <h2>Strict blocking</h3>
+    <h2>Strict blocking</h2>
     <div>
         <p><strong><a href="/gorhill/httpswitchboard/wiki/%22Strict-blocking%22-illustrated">Strict blocking</a></strong>,
         introduced in <a href="/gorhill/httpswitchboard/wiki/Change-log#036">version 0.3.6</a>,
@@ -52,7 +52,7 @@ <h2>Strict blocking</h3>
         </ul>
         </div>
 
-    <h2>Cookies</h3>
+    <h2>Cookies</h2>
     <div>
         <p>Blacklisted cookies are not prevented by <i>HTTP Switchboard</i> from entering
         your browser. However they are prevented from leaving your browser, which
@@ -70,7 +70,7 @@ <h2>Cookies</h3>
         </ul>
         </div>
 
-    <h2>Chromium: behind-the-scene requests</h3>
+    <h2>Chromium: behind-the-scene requests</h2>
     <div>
         <p>According to <a href="http://www.google.com/intl/en/chrome/browser/privacy/whitepaper.html">Google Chrome Privacy Whitepaper</a>,
         <i>Chromium</i> might send HTTP requests to <i>Google</i> without the user