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
@@ -96,11 +96,11 @@
 
     observePage: function () {
         /*
             When a textarea is added via jascript we add the menu :)
         */
-        let this.xObserver = new MutationObserver(function (mutations) {
+        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]));

Index: gc_lang/fr/webext/content_scripts/menu.js
==================================================================
--- gc_lang/fr/webext/content_scripts/menu.js
+++ gc_lang/fr/webext/content_scripts/menu.js
@@ -11,32 +11,29 @@
         this.xButton = oGrammalecte.createNode("div", {className: "grammalecte_menu_main_button", textContent: " "});
         this.xButton.onclick = () => { this.switchMenu(); };
         this.xButton.style.zIndex = (xNode.style.zIndex.search(/^[0-9]+$/) !== -1) ? (parseInt(xNode.style.zIndex) + 1).toString() : xNode.style.zIndex;
         this.xMenu = this._createMenu();
 
-        let style = window.getComputedStyle(this.xNode);
-        let topMargin = -1 * (8 + parseInt(style.marginBottom.replace('px', ''), 10));
-
-        let insAfterThis = this.xNode;
-        if ( document.location.host == "twitter.com" && this.xNode.classList.contains('rich-editor')){
-            insAfterThis = this.xNode.parentNode;
-        }
-
-        this._insertAfter(this.xButton, insAfterThis);
-        this.xButton.style.marginTop = topMargin + 'px';
-
-        this._insertAfter(this.xMenu, insAfterThis);
-        this.xMenu.style.marginTop = (topMargin + 8) + 'px';
-
-        this._createListenersOnReferenceNode();
-    }
-
-    _insertAfter (xNewNode, xReferenceNode) {
-        xReferenceNode.parentNode.insertBefore(xNewNode, xReferenceNode.nextSibling);
-    }
-
-    _createListenersOnReferenceNode () {
+        let xStyle = window.getComputedStyle(this.xNode);
+        let nMarginTop = -1 * (8 + parseInt(xStyle.marginBottom.replace('px', ''), 10));
+
+        let xNodeInsertAfter = this.xNode;
+        if (document.location.host == "twitter.com" && this.xNode.classList.contains('rich-editor')) {
+            xNodeInsertAfter = this.xNode.parentNode;
+        }
+
+        this._insertAfter(this.xButton, xNodeInsertAfter, nMarginTop);
+        this._insertAfter(this.xMenu, xNodeInsertAfter, nMarginTop + 8);
+        this._createListeners();
+    }
+
+    _insertAfter (xNewNode, xReferenceNode, nMarginTop) {
+        xReferenceNode.parentNode.insertBefore(xNewNode, xReferenceNode.nextSibling);
+        xNewNode.style.marginTop = nMarginTop + "px";
+    }
+
+    _createListeners () {
         this.xNode.addEventListener('focus', (e) => {
             this.xButton.style.display = "block";
         });
         this.xNode.addEventListener('blur', (e) => {
             window.setTimeout(() => {this.xButton.style.display = "none";}, 300);