Index: branches/RC/core/admin_templates/js/calendar/calendar.js
===================================================================
diff -u -r11925 -r11932
--- branches/RC/core/admin_templates/js/calendar/calendar.js	(.../calendar.js)	(revision 11925)
+++ branches/RC/core/admin_templates/js/calendar/calendar.js	(.../calendar.js)	(revision 11932)
@@ -1623,7 +1623,7 @@
 		'%p'
 	];
 
-	for (var i in originals) {
+	for (var i = 0; i < originals.length; i++) {
 		php_format = php_format.replace(new RegExp(originals[i]), replacements[i]);
 	}