diff -r 488665d49417 -r 57ce13805b6f includes/clientside/tinymce/plugins/advimage/js/image.js
--- a/includes/clientside/tinymce/plugins/advimage/js/image.js	Sun Dec 21 15:35:46 2008 -0500
+++ b/includes/clientside/tinymce/plugins/advimage/js/image.js	Sun Dec 21 16:28:00 2008 -0500
@@ -103,7 +103,7 @@
 
 		if (tinyMCEPopup.getParam("accessibility_warnings", 1)) {
 			if (!f.alt.value) {
-				tinyMCEPopup.editor.windowManager.confirm(tinyMCEPopup.getLang('advimage_dlg.missing_alt'), function(s) {
+				tinyMCEPopup.confirm(tinyMCEPopup.getLang('advimage_dlg.missing_alt'), function(s) {
 					if (s)
 						t.insertAndClose();
 				});