--- a/src/pyams_skin/resources/js/myams.js	Wed Apr 11 11:20:09 2018 +0200
+++ b/src/pyams_skin/resources/js/myams.js	Thu Apr 12 09:20:54 2018 +0200
@@ -677,7 +677,7 @@
 			if (!event) {
 				event = window.event;
 			}
-			if (event) {
+			if (event && (typeof(event) !== 'string')) {
 				if (event.stopPropagation) {
 					event.stopPropagation();
 					event.preventDefault();