Added Safari Support

include.preload.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 60 matching lines @@
   var target = event.target;
   var tag = target.localName;
   var expectedEvent = (tag == "iframe" || tag == "frame" ? "load" : "error");
   if (tag in typeMap && event.type == expectedEvent)
   {
     // This element failed loading, did we block it?
     var url = target.src;
     if (!url)
       return;
 
-    var type = typeMap[tag];
-    chrome.extension.sendRequest({reqtype: "should-collapse", url: url, documentUrl: document.URL, type: type}, function(response)
-    {
+    ext.backgroundPage.sendMessage({
+      type: "should-collapse",
+      url: url,
+      documentUrl: document.URL,
+      mediatype: typeMap[tag]
+    }, function(response) {
       if (response && target.parentNode)
       {
         // <frame> cannot be removed, doing that will mess up the frameset
         if (tag == "frame")
           target.style.setProperty("visibility", "hidden", "!important");
         else
           target.parentNode.removeChild(target);
       }
     });
   }
 }
 
 function init()
 {
   // Make sure this is really an HTML page, as Chrome runs these scripts on just about everything
   if (!(document.documentElement instanceof HTMLElement))
     return;
 
   document.addEventListener("error", checkCollapse, true);
   document.addEventListener("load", checkCollapse, true);
 
-  chrome.extension.sendRequest({reqtype: "get-settings", selectors: true, frameUrl: window.location.href}, function(response)
-  {
+  ext.backgroundPage.sendMessage({
+    type: "get-settings",
+    selectors: true,
+    frameUrl: window.location.href
+  }, function(response) {
     setElemhideCSSRules(response.selectors);
   });
 }
 
 // In Chrome 18 the document might not be initialized yet
 if (document.documentElement)
   init();
 else
   window.setTimeout(init, 0);