diff --git a/greasemonkey/virtualblinders.user.js b/greasemonkey/virtualblinders.user.js
index bdea8d1..ebd5c4c 100644
--- a/greasemonkey/virtualblinders.user.js
+++ b/greasemonkey/virtualblinders.user.js
@@ -9,7 +9,7 @@
 # handle background tab
 ## stop timer when focus lost window.onunload or window.onblur
 ## restart timer when focus is back window.load or window.onfocus
-## XXX failing so far
+## XXX what is happening when 2 background tabs are increasing the timer?!
 # improve the list of websites to include
 ## consider include * then refine window.location pattern per task
 # make timers (default to 0 sec, value defined via the script or a GM_Value) to be more flexible
@@ -34,10 +34,10 @@ GM_xmlhttpRequest({
 });
 
 function responseCheck(task) {
-	//task = 'Reading\n';
+	task = 'Reading\n';
 	timeThreshold = 600;
 	aboveThreshold = ( timeThreshold < time_spent );
-	//aboveThreshold = true;
+	aboveThreshold = false;
 	if (task == 'Reading\n' || task == 'Programming\n'){
 		if ( !aboveThreshold ) {
 			//under threshold, just display a warning and the content
@@ -52,9 +52,9 @@ function responseCheck(task) {
 			//regarding the specific syntax
 			//see http://commons.oreilly.com/wiki/index.php/Greasemonkey_Hacks/Getting_Started#Pitfall_.231:_Auto-eval_Strings
 			GM_log("register listeners");
-			window.addEventListener("onblur", stopTimer, true);
-			window.addEventListener("onfocus", restartTimer, true);
-			window.addEventListener("onunload", setTotalTimeSpent, true);
+			window.addEventListener("blur", stopTimer, true);
+			window.addEventListener("focus", restartTimer, true);
+			window.addEventListener("unload", setTotalTimeSpent, true);
 		} else {
 			//above threshold, only display the warning without the content
 			document.body.innerHTML="You should be focusing on <a href=\"http://fabien.benetou.fr/CognitiveEnvironments/"
@@ -71,15 +71,11 @@ function mytimer() {
 	//GM_log("timer tick");
 	time_spent=time_spent+1;
 	//fail document.getElementById('timespent').innerText=time_spent;
-	GM_setValue(MODE,time_spent);
-	// this should only be un setTotalTimeSpent() but since the events do not work this will remain here for now
 }
 
 function stopTimer() {
 	GM_log("stop timer");
-	// never called!
 	window.clearInterval(t);
-	// tested and worked, t value is correct
 }
 
 function restartTimer() {
@@ -90,4 +86,5 @@ function restartTimer() {
 function setTotalTimeSpent() {
 	GM_log("set total time spent");
 	GM_setValue(MODE,time_spent);
+	// probably better to re-read the value then add the time ellapsed since
 }