--- a/browser/base/content/browser-context.inc
+++ b/browser/base/content/browser-context.inc
@@ -76,16 +76,22 @@
                 label="&openLinkCmd.label;"
                 accesskey="&openLinkCmd.accesskey;"
                 oncommand="gContextMenu.openLink();"/>
       <menuitem id="context-openlinkprivate"
                 label="&openLinkInPrivateWindowCmd.label;"
                 accesskey="&openLinkInPrivateWindowCmd.accesskey;"
                 oncommand="gContextMenu.openLinkInPrivateWindow();"/>
       <menuseparator id="context-sep-open"/>
+      <menuitem id="context-view-cite-url"
+                label="&viewCiteURLCmd.label;"
+                accesskey="&viewCiteURLCmd.accesskey;"
+                oncommand="gContextMenu.viewCiteURL(event);"
+                onclick="checkForMiddleClick(this, event);"/>
+      <menuseparator id="context-sep-cite"/>
       <menuitem id="context-bookmarklink"
                 label="&bookmarkThisLinkCmd.label;"
                 accesskey="&bookmarkThisLinkCmd.accesskey;"
                 oncommand="gContextMenu.bookmarkLink();"/>
       <menuitem id="context-sharelink"
                 label="&shareLink.label;"
                 accesskey="&shareLink.accesskey;"
                 oncommand="gContextMenu.shareLink();"/>

--- a/browser/base/content/nsContextMenu.js
+++ b/browser/base/content/nsContextMenu.js
@@ -169,17 +169,17 @@ nsContextMenu.prototype = {
     this.showItem("context-openlinkinusercontext-menu", shouldShow && !isWindowPrivate && showContainers);
     this.showItem("context-openlinkincurrent", this.onPlainTextLink);
     this.showItem("context-sep-open", shouldShow);
   },
 
   initNavigationItems: function CM_initNavigationItems() {
     var shouldShow = !(this.isContentSelected || this.onLink || this.onImage ||
                        this.onCanvas || this.onVideo || this.onAudio ||
-                       this.onTextInput || this.onSocial);
+                       this.onTextInput || this.onSocial || this.citeURL != "");
     this.showItem("context-navigation", shouldShow);
     this.showItem("context-sep-navigation", shouldShow);
 
     let stopped = XULBrowserWindow.stopCommand.getAttribute("disabled") == "true";
 
     let stopReloadItem = "";
     if (shouldShow || this.onSocial) {
       stopReloadItem = (stopped || this.onSocial) ? "reload" : "stop";
@@ -293,16 +293,19 @@ nsContextMenu.prototype = {
     this.showItem("context-sep-viewbgimage", shouldShow &&
                                              !this._hasMultipleBGImages &&
                                              !this.inSyntheticDoc);
     document.getElementById("context-viewbgimage")
             .disabled = !this.hasBGImage;
 
     this.showItem("context-viewimageinfo", this.onImage);
     this.showItem("context-viewimagedesc", this.onImage && this.imageDescURL !== "");
+
+    this.showItem("context-view-cite-url", this.citeURL != "");
+    this.showItem("context-sep-cite", this.citeURL != "");
   },
 
   initMiscItems: function CM_initMiscItems() {
     // Use "Bookmark This Link" if on a link.
     let bookmarkPage = document.getElementById("context-bookmarkpage");
     this.showItem(bookmarkPage,
                   !(this.isContentSelected || this.onTextInput || this.onLink ||
                     this.onImage || this.onVideo || this.onAudio || this.onSocial ||
@@ -630,16 +633,17 @@ nsContextMenu.prototype = {
       return;
     }
 
     // Initialize contextual info.
     this.onImage           = false;
     this.onLoadedImage     = false;
     this.onCompletedImage  = false;
     this.imageDescURL      = "";
+    this.citeURL           = "";
     this.onCanvas          = false;
     this.onVideo           = false;
     this.onAudio           = false;
     this.onDRMMedia        = false;
     this.onTextInput       = false;
     this.onNumeric         = false;
     this.onKeywordField    = false;
     this.mediaURL          = "";
@@ -856,16 +860,25 @@ nsContextMenu.prototype = {
             this._hasMultipleBGImages = true;
           }
           if (bgImgUrl) {
             this.hasBGImage = true;
             this.bgImageURL = makeURLAbsolute(elem.baseURI,
                                               bgImgUrl);
           }
         }
+
+        // Quote/Mod elements with cite attributes?
+        if (this.citeURL == "" &&
+            (elem instanceof HTMLModElement ||
+             elem instanceof HTMLQuoteElement) &&
+            elem.hasAttribute('cite')) {
+          this.citeURL = makeURLAbsolute(elem.baseURI,
+                                         elem.getAttribute('cite'));
+        }
       }
 
       elem = elem.parentNode;
     }
 
     // See if the user clicked on MathML
     const NS_MathML = "http://www.w3.org/1998/Math/MathML";
     if ((this.target.nodeType == Node.TEXT_NODE &&
@@ -1123,16 +1136,25 @@ nsContextMenu.prototype = {
   viewImageDesc: function(e) {
     urlSecurityCheck(this.imageDescURL,
                      this.browser.contentPrincipal,
                      Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
     openUILink(this.imageDescURL, e, { disallowInheritPrincipal: true,
                                        referrerURI: gContextMenuContentData.documentURIObject });
   },
 
+  // Open the URL in the cite attribute of blockquote, q, ins, and del elements
+  viewCiteURL: function(e) {
+    urlSecurityCheck(this.citeURL, this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+    openUILink(this.citeURL, e, { disallowInheritPrincipal: true,
+                                  referrerURI: gContextMenuContentData.documentURIObject });
+  },
+
+
   viewFrameInfo: function() {
     BrowserPageInfo(gContextMenuContentData.docLocation, null, null,
                     this.frameOuterWindowID);
   },
 
   reloadImage: function() {
     urlSecurityCheck(this.mediaURL,
                      this.browser.contentPrincipal,

--- a/browser/locales/en-US/chrome/browser/browser.dtd
+++ b/browser/locales/en-US/chrome/browser/browser.dtd
@@ -471,16 +471,18 @@ These should match what Safari and other
 <!ENTITY viewPageSourceCmd.label      "View Page Source">
 <!ENTITY viewPageSourceCmd.accesskey  "V">
 <!ENTITY viewFrameSourceCmd.label     "View Frame Source">
 <!ENTITY viewFrameSourceCmd.accesskey "V">
 <!ENTITY viewPageInfoCmd.label        "View Page Info">
 <!ENTITY viewPageInfoCmd.accesskey    "I">
 <!ENTITY viewFrameInfoCmd.label       "View Frame Info">
 <!ENTITY viewFrameInfoCmd.accesskey   "I">
+<!ENTITY viewCiteURLCmd.label         "View Citation">
+<!ENTITY viewCiteURLCmd.accesskey     "C">
 <!ENTITY reloadImageCmd.label         "Reload Image">
 <!ENTITY reloadImageCmd.accesskey     "R">
 <!ENTITY viewImageCmd.label           "View Image">
 <!ENTITY viewImageCmd.accesskey       "I">
 <!ENTITY viewImageInfoCmd.label       "View Image Info">
 <!ENTITY viewImageInfoCmd.accesskey   "f">
 <!ENTITY viewImageDescCmd.label       "View Description">
 <!ENTITY viewImageDescCmd.accesskey   "D">