Index: /CKEditor/branches/features/aria/_source/lang/en.js
===================================================================
--- /CKEditor/branches/features/aria/_source/lang/en.js	(revision 5033)
+++ /CKEditor/branches/features/aria/_source/lang/en.js	(revision 5034)
@@ -90,4 +90,5 @@
 		ok				: 'OK',
 		cancel			: 'Cancel',
+		close : 'Close',
 		generalTab		: 'General',
 		advancedTab		: 'Advanced',
Index: /CKEditor/branches/features/aria/_source/themes/default/theme.js
===================================================================
--- /CKEditor/branches/features/aria/_source/themes/default/theme.js	(revision 5033)
+++ /CKEditor/branches/features/aria/_source/themes/default/theme.js	(revision 5034)
@@ -177,5 +177,5 @@
 								'<div id="%title#" class="%title"></div>' +
 								'<div id="%close_button#" class="%close_button">' +
-									'<span>X</span>' +
+									'<a href="javascript:void(0)" title="' +  editor.lang.common.close+'"><span class="cke_label">X</span></a>' +
 								'</div>' +
 								'<div id="%tabs#" class="%tabs"></div>' +