Ticket #11296: 11296.diff

wp-admin/js/categories.dev.js

@@ -9 +9 @@
                 name = $("<span>" + $('name', r).text() + "</span>").text();
                 id = $('cat', r).attr('id');
                 options[options.length] = new Option(name, id);
+                
+                $('.delete a[class^="delete"]').click(function(){return false;});
         }
 
         delAfter = function( r, settings ) {