Index: gc_lang/fr/webext/content_scripts/api.js
==================================================================
--- gc_lang/fr/webext/content_scripts/api.js
+++ gc_lang/fr/webext/content_scripts/api.js
@@ -10,14 +10,18 @@
     // to be sent to the content-cript via an event “GrammalecteCall”
 
     sVersion: "1.0",
 
     generateNodeId: function (xNode) {
-        xNode.id = "grammalecte_generated_id_" + Date.now().toString(36) + "_" + (Math.floor(Math.random() * (1000000))).toString(36);
+        xNode.id = "grammalecte_generated_id_" + Date.now().toString(36) + "_" + this._random(0, 1000000).toString(10);
         console.log("[Grammalecte API] generated id:", xNode.id);
         return xNode.id;
     },
+
+    _random: function (nMin, nMax) {
+        return Math.floor(Math.random() * (nMax - nMin + 1) + nMin);
+    },
 
     openPanelForNode: function (vNode) {
         //  Parameter: a HTML node or the identifier of a HTML node
         if (vNode instanceof HTMLElement) {
             let sNodeId = vNode.id || this.generateNodeId(vNode);