Fixed request type for sub frames on Safari

safari/ext/content.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 245 matching lines @@
     }
   };
 
 
   /* Web request blocking */
 
   document.addEventListener("beforeload", function(event)
   {
     var type;
 
-    switch(event.target.nodeName)
+    switch(event.target.localName)
     {
-      case "FRAME":
-      case "IFRAME":
-        type = "frame";
+      case "frame":
+      case "iframe":
+        type = "sub_rame";
         break;
-      case "IMG":
+      case "img":
         type = "image";
         break;
-      case "OBJECT":
-      case "EMBED":
+      case "object":
+      case "embed":
         type = "object";
         break;
-      case "SCRIPT":
+      case "script":
         type = "script";
         break;
-      case "LINK":
-        if (/(^|\s)stylesheet($|\s)/i.test(event.target.rel))
+      case "link":
+        if (/\bstylesheet\b/i.test(event.target.rel))
         {
           type = "stylesheet";
           break;
         }
       default:
         type = "other";
     }
 
     if (!safari.self.tab.canLoad(event, {type: "webRequest", payload: {url: event.url, type: type}}))
       event.preventDefault();
   }, true);
 
 
   /* API */
 
   ext.backgroundPage = {
     _eventTarget: safari.self,
     _messageDispatcher: safari.self.tab,
 
     sendMessage: sendMessage,
     getWindow: function() { return proxy.getObject(0); }
   };
 
   ext.onMessage = new MessageEventTarget(safari.self);
 })();