Index: gc_lang/fr/webext/background.js
==================================================================
--- gc_lang/fr/webext/background.js
+++ gc_lang/fr/webext/background.js
@@ -171,11 +171,11 @@
     title: "Corriger",
     contexts: ["selection"]
 });
 
 browser.contextMenus.create({
-    id: "whatever",
+    id: "separator1",
     type: "separator",
     contexts: ["selection"]
 });
 
 browser.contextMenus.create({
@@ -188,10 +188,21 @@
     id: "conjugueur_tab",
     title: "Conjugueur [onglet]",
     contexts: ["all"]
 });
 
+browser.contextMenus.create({
+    id: "separator2",
+    type: "separator",
+    contexts: ["editable"]
+});
+
+browser.contextMenus.create({
+    id: "rescanPage",
+    title: "Rechercher à nouveau les zones de texte",
+    contexts: ["editable"]
+});
 
 browser.contextMenus.onClicked.addListener(function (xInfo, xTab) {
     // xInfo = https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/contextMenus/OnClickData
     // xTab = https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/tabs/Tab
     // confusing: no way to get the node where we click?!
@@ -206,10 +217,14 @@
             openConjugueurWindow();
             break;
         case "conjugueur_tab":
             openConjugueurTab();
             break;
+        case "rescanPage":
+            let xPort = dConnx.get(xTab.id);
+            xPort.postMessage({sActionDone: "rescanPage"});
+            break;
         default:
             console.log("[Background] Unknown menu id: " + xInfo.menuItemId);
             console.log(xInfo);
             console.log(xTab);
     }    

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
@@ -57,10 +57,21 @@
         for (let xNode of lNode) {
             this.lMenu.push(new GrammalecteMenu(this.nMenu, xNode));
             this.nMenu += 1;
         }
     },
+
+    rescanPage: function () {
+        if (this.oTFPanel !== null) { this.oTFPanel.hide(); }
+        if (this.oLxgPanel !== null) { this.oLxgPanel.hide(); }
+        if (this.oGCPanel !== null) { this.oGCPanel.hide(); }
+        for (let oMenu of this.lMenu) {
+            oMenu.deleteNodes();
+        }
+        this.lMenu.length = 0; // to clear an array
+        this.createMenus();
+    },
 
     createTFPanel: function () {
         if (this.oTFPanel === null) {
             this.oTFPanel = new GrammalecteTextFormatter("grammalecte_tf_panel", "Formateur de texte", 760, 600, false);
             //this.oTFPanel.logInnerHTML();
@@ -126,10 +137,13 @@
             oGrammalecte.createLxgPanel();
             oGrammalecte.oLxgPanel.clear();
             oGrammalecte.oLxgPanel.show();
             oGrammalecte.oLxgPanel.startWaitIcon();
             break;
+        case "rescanPage":
+            oGrammalecte.rescanPage();
+            break;
         default:
             console.log("[Content script] Unknown command: " + sActionDone);
     }
 });
 

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
@@ -5,15 +5,15 @@
 
 class GrammalecteMenu {
 
     constructor (nMenu, xTextArea) {
         this.sMenuId = "grammalecte_menu" + nMenu;
-        let xButton = createNode("div", {className: "grammalecte_menu_main_button", textContent: " "});
-        xButton.onclick = () => { this.switchMenu(); };
-        let xMenu = this._createMenu(xTextArea);
-        this._insertAfter(xButton, xTextArea);
-        this._insertAfter(xMenu, xTextArea);
+        this.xButton = createNode("div", {className: "grammalecte_menu_main_button", textContent: " "});
+        this.xButton.onclick = () => { this.switchMenu(); };
+        this.xMenu = this._createMenu(xTextArea);
+        this._insertAfter(this.xButton, xTextArea);
+        this._insertAfter(this.xMenu, xTextArea);
     }
 
     _insertAfter (xNewNode, xReferenceNode) {
         xReferenceNode.parentNode.insertBefore(xNewNode, xReferenceNode.nextSibling);
     }
@@ -84,11 +84,16 @@
         }
         catch (e) {
             showError(e);
         }
     }
+
+    deleteNodes () {
+        this.xMenu.parentNode.removeChild(this.xMenu);
+        this.xButton.parentNode.removeChild(this.xButton);
+    }
 
     switchMenu () {
     	let xMenu = document.getElementById(this.sMenuId);
         xMenu.style.display = (xMenu.style.display == "block") ? "none" : "block";
     }
 }