diff --git a/backend.php b/backend.php
index 39b0f5f39..debb55c55 100644
--- a/backend.php
+++ b/backend.php
@@ -1248,7 +1248,14 @@
 			<script type=\"text/javascript\">
 				try {
 					document.onkeydown = hotkey_handler;
-					parent.update_all_counters(\"$feed\");
+					try {
+						parent.update_all_counters(\"$feed\");
+					} catch (e) {
+						// this is workaround against mysterious permission
+						// denied feature/bug of firefox (ticket #73)
+						// if call from this context failed - ignore silently
+						exception_error(\"viewfeed/footer1/counters\", e, true);
+					}
 				} catch (e) {
 					exception_error(\"viewfeed/footer1\", e);
 				}
diff --git a/functions.js b/functions.js
index 93a36b587..c6f1e0d03 100644
--- a/functions.js
+++ b/functions.js
@@ -7,7 +7,7 @@ function browser_has_opacity() {
 		navigator.userAgent.match("Opera") != null;
 }
 
-function exception_error(location, e) {
+function exception_error(location, e, silent) {
 	var msg;
 
 	if (e.fileName) {
@@ -23,7 +23,9 @@ function exception_error(location, e) {
 
 	debug("<b>EXCEPTION: " + msg + "</b>");
 
-	alert(msg);
+	if (!silent) {
+		alert(msg);
+	}
 }
 
 function disableHotkeys() {