diff --git a/web/firefoxcom.js b/web/firefoxcom.js
new file mode 100644
index 000000000..f60c26aed
--- /dev/null
+++ b/web/firefoxcom.js
@@ -0,0 +1,60 @@
+var FirefoxCom = (function FirefoxComClosure() {
+  return {
+    /**
+     * Creates an event that the extension is listening for and will
+     * synchronously respond to.
+     * NOTE: It is reccomended to use request() instead since one day we may not
+     * be able to synchronously reply.
+     * @param {String} action The action to trigger.
+     * @param {String} data Optional data to send.
+     * @return {*} The response.
+     */
+    requestSync: function(action, data) {
+      var request = document.createTextNode('');
+      request.setUserData('action', action, null);
+      request.setUserData('data', data, null);
+      request.setUserData('sync', true, null);
+      document.documentElement.appendChild(request);
+
+      var sender = document.createEvent('Events');
+      sender.initEvent('pdf.js.message', true, false);
+      request.dispatchEvent(sender);
+      var response = request.getUserData('response');
+      document.documentElement.removeChild(request);
+      return response;
+    },
+    /**
+     * Creates an event that the extension is listening for and will
+     * asynchronously respond by calling the callback.
+     * @param {String} action The action to trigger.
+     * @param {String} data Optional data to send.
+     * @param {Function} callback Optional response callback that will be called
+     * with one data argument.
+     */
+    request: function(action, data, callback) {
+      var request = document.createTextNode('');
+      request.setUserData('action', action, null);
+      request.setUserData('data', data, null);
+      request.setUserData('sync', false, null);
+      if (callback) {
+        request.setUserData('callback', callback, null);
+
+        document.addEventListener('pdf.js.response', function listener(event) {
+          var node = event.target,
+              callback = node.getUserData('callback'),
+              response = node.getUserData('response');
+
+          document.documentElement.removeChild(node);
+
+          document.removeEventListener('pdf.js.response', listener, false);
+          return callback(response);
+        }, false);
+      }
+      document.documentElement.appendChild(request);
+
+      var sender = document.createEvent('HTMLEvents');
+      sender.initEvent('pdf.js.message', true, false);
+      return request.dispatchEvent(sender);
+    }
+  };
+})();
diff --git a/web/viewer.js b/web/viewer.js
index e2b2e1260..92c38c31e 100644
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -91,66 +91,7 @@ var ProgressBar = (function ProgressBarClosure() {
 })();
 
 //#if FIREFOX || MOZCENTRAL
-var FirefoxCom = (function FirefoxComClosure() {
-  return {
-    /**
-     * Creates an event that the extension is listening for and will
-     * synchronously respond to.
-     * NOTE: It is reccomended to use request() instead since one day we may not
-     * be able to synchronously reply.
-     * @param {String} action The action to trigger.
-     * @param {String} data Optional data to send.
-     * @return {*} The response.
-     */
-    requestSync: function(action, data) {
-      var request = document.createTextNode('');
-      request.setUserData('action', action, null);
-      request.setUserData('data', data, null);
-      request.setUserData('sync', true, null);
-      document.documentElement.appendChild(request);
-
-      var sender = document.createEvent('Events');
-      sender.initEvent('pdf.js.message', true, false);
-      request.dispatchEvent(sender);
-      var response = request.getUserData('response');
-      document.documentElement.removeChild(request);
-      return response;
-    },
-    /**
-     * Creates an event that the extension is listening for and will
-     * asynchronously respond by calling the callback.
-     * @param {String} action The action to trigger.
-     * @param {String} data Optional data to send.
-     * @param {Function} callback Optional response callback that will be called
-     * with one data argument.
-     */
-    request: function(action, data, callback) {
-      var request = document.createTextNode('');
-      request.setUserData('action', action, null);
-      request.setUserData('data', data, null);
-      request.setUserData('sync', false, null);
-      if (callback) {
-        request.setUserData('callback', callback, null);
-
-        document.addEventListener('pdf.js.response', function listener(event) {
-          var node = event.target,
-              callback = node.getUserData('callback'),
-              response = node.getUserData('response');
-
-          document.documentElement.removeChild(node);
-
-          document.removeEventListener('pdf.js.response', listener, false);
-          return callback(response);
-        }, false);
-      }
-      document.documentElement.appendChild(request);
-
-      var sender = document.createEvent('HTMLEvents');
-      sender.initEvent('pdf.js.message', true, false);
-      return request.dispatchEvent(sender);
-    }
-  };
-})();
+//#include firefoxcom.js
 //#endif
 
 // Settings Manager - This is a utility for saving settings