diff --git a/js/postMessage-debugger.js b/js/postMessage-debugger.js
index 379126a..54f223b 100644
--- a/js/postMessage-debugger.js
+++ b/js/postMessage-debugger.js
@@ -1,9 +1,14 @@
-console.debug("postMessageDebugger activated");
+function hashCode(s){
+  return s.split("").reduce(function(a,b){a=((a<<5)-a)+b.charCodeAt(0);return a&a},0);              
+}
+
+var id = "[" + this.hashCode(window.location.href) + "]";
+console.debug(id + " postMessageDebugger activated");
 addEventListener("message", function(event) {
   console.debug(
-    "postMessage received by '" +
-      document.title +
-      "' from '" +
+    "postMessage received by " +
+      id +
+      " from '" +
       event.origin +
       "' with data:",
     event.data