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
@@ -137,34 +137,34 @@
         this.createMenus();
     },
 
     createTFPanel: function () {
         if (this.oTFPanel === null) {
-            this.oTFPanel = new GrammalecteTextFormatter(this.sExtensionUrl, "grammalecte_tf_panel", "Formateur de texte", 760, 600, false);
+            this.oTFPanel = new GrammalecteTextFormatter("grammalecte_tf_panel", "Formateur de texte", 760, 600, false);
             //this.oTFPanel.logInnerHTML();
             this.oTFPanel.insertIntoPage();
             this.oTFPanel.adjustHeight();
         }
     },
 
     createLxgPanel: function () {
         if (this.oLxgPanel === null) {
-            this.oLxgPanel = new GrammalecteLexicographer(this.sExtensionUrl, "grammalecte_lxg_panel", "Lexicographe", 500, 700);
+            this.oLxgPanel = new GrammalecteLexicographer("grammalecte_lxg_panel", "Lexicographe", 500, 700);
             this.oLxgPanel.insertIntoPage();
         }
     },
 
     createGCPanel: function () {
         if (this.oGCPanel === null) {
-            this.oGCPanel = new GrammalecteGrammarChecker(this.sExtensionUrl, "grammalecte_gc_panel", "Grammalecte", 500, 700);
+            this.oGCPanel = new GrammalecteGrammarChecker("grammalecte_gc_panel", "Grammalecte", 500, 700);
             this.oGCPanel.insertIntoPage();
         }
     },
 
     createMessageBox: function () {
         if (this.oMessageBox === null) {
-            this.oMessageBox = new GrammalecteMessageBox(this.sExtensionUrl, "grammalecte_message_box", "Grammalecte");
+            this.oMessageBox = new GrammalecteMessageBox("grammalecte_message_box", "Grammalecte");
             this.oMessageBox.insertIntoPage();
         }
     },
 
     startGCPanel: function (xNode=null) {

Index: gc_lang/fr/webext/content_scripts/message_box.js
==================================================================
--- gc_lang/fr/webext/content_scripts/message_box.js
+++ gc_lang/fr/webext/content_scripts/message_box.js
@@ -8,13 +8,12 @@
 "use strict";
 
 
 class GrammalecteMessageBox {
 
-    constructor (sUrl, sId, sTitle) {
+    constructor (sId, sTitle) {
         this.sId = sId;
-        this.sUrl = sUrl;
 
         this.bShadow = document.body.createShadowRoot || document.body.attachShadow;
         if (this.bShadow){
             this.oShadowPanel = oGrammalecte.createNode("div", {id: this.sId+"_shadow", style: "width:0;height:0;"});
             this.oShadow = this.oShadowPanel.attachShadow({mode: "open"});
@@ -65,14 +64,14 @@
     }
 
     insertIntoPage () {
         if (this.bShadow){
             this.oShadow.appendChild(
-                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: this.sUrl+"content_scripts/panel.css"})
+                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: oGrammalecte.sExtensionUrl + "content_scripts/panel.css"})
             );
             this.oShadow.appendChild(
-                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: this.sUrl+"content_scripts/message_box.css"})
+                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: oGrammalecte.sExtensionUrl + "content_scripts/message_box.css"})
             );
             this.oShadow.appendChild(this.xMessageBox);
             document.body.appendChild(this.oShadowPanel);
         } else {
             document.body.appendChild(this.xMessageBox);

Index: gc_lang/fr/webext/content_scripts/panel.js
==================================================================
--- gc_lang/fr/webext/content_scripts/panel.js
+++ gc_lang/fr/webext/content_scripts/panel.js
@@ -8,13 +8,12 @@
 "use strict";
 
 
 class GrammalectePanel {
 
-    constructor (sUrl, sId, sTitle, nWidth, nHeight, bFlexible=true) {
+    constructor (sId, sTitle, nWidth, nHeight, bFlexible=true) {
         this.sId = sId;
-        this.sUrl = sUrl;
         this.nWidth = nWidth;
         this.nHeight = nHeight;
         this.bFlexible = bFlexible;
 
         this.bShadow = document.body.createShadowRoot || document.body.attachShadow;
@@ -98,20 +97,20 @@
     }
 
     insertIntoPage () {
         if (this.bShadow){
             this.oShadow.appendChild(
-                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: this.sUrl+"content_scripts/panel.css"})
+                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: oGrammalecte.sExtensionUrl + "content_scripts/panel.css"})
+            );
+            this.oShadow.appendChild(
+                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: oGrammalecte.sExtensionUrl + "content_scripts/panel_gc.css"})
             );
             this.oShadow.appendChild(
-                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: this.sUrl+"content_scripts/panel_gc.css"})
+                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: oGrammalecte.sExtensionUrl + "content_scripts/panel_lxg.css"})
             );
             this.oShadow.appendChild(
-                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: this.sUrl+"content_scripts/panel_lxg.css"})
-            );
-            this.oShadow.appendChild(
-                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: this.sUrl+"content_scripts/panel_tf.css"})
+                oGrammalecte.createNode("link", {rel: "stylesheet", type: "text/css", media: "all", href: oGrammalecte.sExtensionUrl + "content_scripts/panel_tf.css"})
             );
             this.oShadow.appendChild(this.xPanel);
             document.body.appendChild(this.oShadowPanel);
         } else {
             document.body.appendChild(this.xPanel);