Use jQuery's $.isArray, not instanceof Array. The later has troubles with cross-frame...

diff --git a/resources/jquery/jquery.mwExtension.js b/resources/jquery/jquery.mwExtension.js
index 82ca924..39273c1 100644 (file)
--- a/resources/jquery/jquery.mwExtension.js
+++ b/resources/jquery/jquery.mwExtension.js
@@ -43,7 +43,7 @@ jQuery.extend({
                        return false;
                }
                for ( var i = 0; i < arrThis.length; i++ ) {
-                       if ( arrThis[i] instanceof Array ) {
+                       if ( $.isArray(arrThis[i]) ) {
                                if ( !$.compareArray( arrThis[i], arrAgainst[i] ) ) {
                                        return false;
                                }