diff --git a/lib/main.js b/lib/main.js
index 9bf67fd..5c12f0e 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -52,6 +52,8 @@
 	var prefs = preferences.prefs;
 	var URL = require("sdk/url").URL;
 	var _ = require("sdk/l10n").get;
+	var tabUtils = require("sdk/tabs/utils");
+	var windowUtils = require("sdk/window/utils");
 
 	// preferences
 	Object.keys(prefs).forEach(function(pref){
@@ -184,23 +186,49 @@
 			
 			// display notifications
 			worker.port.on("accessed readAPI", function(status){
+				function log(title, object){
+					console.log(title);
+					for (var name in object){
+						console.log(name, object[name]);
+					}
+				}
 				switch (status){
 					case "fake":
+						
 						var contentURL = new URL(worker.contentURL);
 						var url = contentURL.href;
 						var domain = contentURL.hostname;
 						var message = "Faked readout on " + url;
 						
+						// log("	worker.tab", worker.tab);
+						// log("	windowUtils", windowUtils);
+						// log("	", windowUtils.windows("navigator:browser", {includePrivate: true})[0][0]);
+						// log("	", windowUtils.windows("navigator:browser", {includePrivate: true})[0][1]);
+						// log("	", windowUtils.windows("navigator:browser", {includePrivate: true})[0][2]);
+						// log("	tabs", tabUtils.getTabs());
+						// console.log(worker.tab.id);
+						// for each (let tab in tabUtils.getTabs()){
+							// console.log(tabUtils.getTabId(tab));
+						// }
 						
-						var notifyBox = gWindow.getNotificationBox();
-						var notification = notifiyBox.getNotificationBoxWithValue("fake-readout");
+						var tab = tabUtils.getTabForId(worker.tab.id);
+						var tabBrowser = tabUtils.getTabBrowserForTab(tab);
+						var browser = tabUtils.getBrowserForTab(tab);
+						var ownerBrowser = windowUtils.getOwnerBrowserWindow(tab);
+						
+						// var notifyBox = ownerBrowser.gBrowser.getNotificationBox();
+						var notifyBox = tabBrowser.getNotificationBox();
+						// log("	chrome window", require("sdk/windows").browserWindows);
+						// var notifyBox = windowUtils.getXULWindow(browser.contentWindow).XULBrowserWindow.getNotificationBox(windowUtils.getDOMWindow(browser.contentWindow));
+						var notification = notifyBox.getNotificationWithValue("fake-readout");
 						if (notification){
 							notification.label = message;
 						}
 						else {
 							var buttons = [
 								{
-									label: 'whitelist URL',
+									label: "whitelist URL",
+									accessKey: "",
 									callback: function(){
 										prefs.whiteList += "," + url;
 										prefService.set("extensions.CanvasBlocker@kkapsner.de.whiteList", prefs.whiteList);
@@ -209,7 +237,8 @@
 									}
 								},
 								{
-									label: 'whitelist domain',
+									label: "whitelist domain",
+									accessKey: "",
 									callback: function(){
 										prefs.whiteList += "," + domain;
 										prefService.set("extensions.CanvasBlocker@kkapsner.de.whiteList", prefs.whiteList);
@@ -219,8 +248,8 @@
 								}
 							];
 
-							let priority = box.PRIORITY_WARNING_MEDIUM;
-							box.appendNotification(
+							let priority = notifyBox.PRIORITY_WARNING_MEDIUM;
+							notifyBox.appendNotification(
 								message,
 								'fake-readout',
 								'chrome://browser/skin/Info.png',