Index: gc_lang/fr/webext/content_scripts/init.js
==================================================================
--- gc_lang/fr/webext/content_scripts/init.js
+++ gc_lang/fr/webext/content_scripts/init.js
@@ -49,10 +49,12 @@
     oGCPanel: null,
 
     oMessageBox: null,
 
     xRightClickedNode: null,
+
+    xObserver: null,
 
     listenRightClick: function () {
         // Node where a right click is done
         // Bug report: https://bugzilla.mozilla.org/show_bug.cgi?id=1325814
         document.addEventListener('contextmenu', function (xEvent) {
@@ -89,10 +91,37 @@
                     this.nMenu += 1;
                 }
             }
         }
     },
+
+    observePage: function () {
+        /*
+            When a textarea is added via jascript we add the menu :)
+        */
+        let this.xObserver = new MutationObserver(function (mutations) {
+            mutations.forEach(function (mutation) {
+                for (let i = 0;  i < mutation.addedNodes.length;  i++){
+                    if (mutation.addedNodes[i].getElementsByTagName) {
+                        if (mutation.addedNodes[i].tagName == "TEXTAREA") {
+                            oGrammalecte.lMenu.push(new GrammalecteMenu(oGrammalecte.nMenu, mutation.addedNodes[i]));
+                            oGrammalecte.nMenu += 1;
+                        } else {
+                            for (let xNode of mutation.addedNodes[i].getElementsByTagName("textarea")) {
+                                oGrammalecte.lMenu.push(new GrammalecteMenu(oGrammalecte.nMenu, xNode));
+                                oGrammalecte.nMenu += 1;
+                            }
+                        }
+                    }
+                }
+            });
+        });
+        this.xObserver.observe(document.body, {
+            childList: true,
+            subtree: true
+        });
+    },
 
     rescanPage: function () {
         if (this.oTFPanel !== null) { this.oTFPanel.hide(); }
         if (this.oLxgPanel !== null) { this.oLxgPanel.hide(); }
         if (this.oGCPanel !== null) { this.oGCPanel.hide(); }
@@ -296,30 +325,6 @@
 /*
     Start
 */
 oGrammalecte.listenRightClick();
 oGrammalecte.createMenus();
-
-/*
-    When a textarea is added via jascript we add the menu :)
-*/
-let observer = new MutationObserver(function(mutations) {
-    mutations.forEach(function(mutation) {
-        for(let i = 0; i < mutation.addedNodes.length; i++){
-            if ( mutation.addedNodes[i].getElementsByTagName ){
-                if ( mutation.addedNodes[i].tagName == "TEXTAREA" ) {
-                    oGrammalecte.lMenu.push(new GrammalecteMenu(oGrammalecte.nMenu, mutation.addedNodes[i]));
-                    oGrammalecte.nMenu += 1;
-                } else {
-                    for (let xNode of mutation.addedNodes[i].getElementsByTagName("textarea")) {
-                        oGrammalecte.lMenu.push(new GrammalecteMenu(oGrammalecte.nMenu, xNode));
-                        oGrammalecte.nMenu += 1;
-                    }
-                }
-            }
-        }
-    });
-});
-observer.observe(document.body, {
-    childList: true,
-    subtree: true
-});
+oGrammalecte.observePage();