Ticket #6580: 6580.patch

_source/core/dom/element.js

@@ -613 +613 @@
                         // Cache the lowercased name inside a closure.
                         var nodeName = this.$.nodeName.toLowerCase();
 
-                        if ( CKEDITOR.env.ie )
+                        if ( CKEDITOR.env.ie && ! ( document.documentMode > 8 ) )
                         {
                                 var scopeName = this.$.scopeName;
                                 if ( scopeName != 'HTML' )

_source/core/dom/document.js

@@ -150 +150 @@
 
                 getElementsByTag : function( tagName, namespace )
                 {
-                        if ( !CKEDITOR.env.ie && namespace )
+                        if ( !( CKEDITOR.env.ie && ! ( document.documentMode > 8 ) ) && namespace )
                                 tagName = namespace + ':' + tagName;
                         return new CKEDITOR.dom.nodeList( this.$.getElementsByTagName( tagName ) );
                 },