Index: branches/5.3.x/core/kernel/utility/debugger/debugger.js
===================================================================
diff -u -N -r15977 -r16111
--- branches/5.3.x/core/kernel/utility/debugger/debugger.js	(.../debugger.js)	(revision 15977)
+++ branches/5.3.x/core/kernel/utility/debugger/debugger.js	(.../debugger.js)	(revision 16111)
@@ -173,7 +173,7 @@
 
 	var $span = document.createElement('SPAN');
 	$span.style.position = 'absolute';
-	$span.style.zIndex= 99;
+	$span.style.zIndex = 1499999;
 	$span.style.top = '0px';
 	$span.style.left = '0px';
 	$span.id = 'debug_toolbar_span';
@@ -379,8 +379,8 @@
 
 Debugger.prototype.StopEvent = function($e) {
 	$e = ($e) ? $e : event;
-	$e.cancelBubble = true;
-	if ($e.stopPropagation) $e.stopPropagation();
+	$e.returnValue = false;
+	if ($e.preventDefault) $e.preventDefault();
 }
 
 Debugger.prototype.Filter = function() {
@@ -640,4 +640,4 @@
 		}
 	}
 	return [curleft,curtop];
-}
\ No newline at end of file
+}