diff --git a/mozilla/extensions/cck/prefAutoCompleteService.js b/mozilla/extensions/cck/prefAutoCompleteService.js
new file mode 100644
index 00000000000..55495f53b09
--- /dev/null
+++ b/mozilla/extensions/cck/prefAutoCompleteService.js
@@ -0,0 +1,144 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is a service that enabled preference autocomplete
+ *
+ * The Initial Developer of the Original Code is IBM Corp.
+ * Portions created by the Initial Developer are Copyright (C) 2005
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+const PREF_AUTOCOMPLETE_SEARCH_CONTRACTID = "@mozilla.org/autocomplete/search;1?name=prefs";
+const PREF_AUTOCOMPLETE_SEARCH_CLSID      = Components.ID('{f0747ed9-764a-4501-a7e5-4d1493605430}');
+
+const nsIAutoCompleteSearch        = Components.interfaces.nsIAutoCompleteSearch;
+
+const gPrefService = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefService);
+const gPrefBranch = gPrefService.getBranch(null).QueryInterface(Components.interfaces.nsIPrefBranch2);
+
+function PrefAutoCompleteSearchHandler() {}
+PrefAutoCompleteSearchHandler.prototype =
+{
+  /* nsISupports */
+  QueryInterface : function handler_QI(iid) {
+    if (iid.equals(Components.interfaces.nsISupports))
+      return this;
+
+    if (nsIAutoCompleteSearch && iid.equals(nsIAutoCompleteSearch))
+      return this;
+
+    throw Components.results.NS_ERROR_NO_INTERFACE;
+  },
+
+  /* nsIAutoCompleteSearch */
+  startSearch : function startSearch(searchString, searchParam, previousResult, listener) {
+    var result = Components.classes["@mozilla.org/autocomplete/simple-result;1"].createInstance();
+    simpleresult = result.QueryInterface(Components.interfaces.nsIAutoCompleteSimpleResult);
+    simpleresult.setSearchString(searchString);
+    simpleresult.setDefaultIndex(0);
+    var prefCount = { value: 0 };
+    var prefArray = gPrefBranch.getChildList("", prefCount);
+    prefArray = prefArray.sort();
+    for (var i = 0; i < prefCount.value; ++i) 
+    {
+      if (prefArray[i].indexOf(searchString) == 0) { 
+       simpleresult.appendMatch(prefArray[i], "");
+      }
+    }
+    if (simpleresult.matchCount > 0) {
+      simpleresult.setSearchResult(Components.interfaces.nsIAutoCompleteResult.RESULT_SUCCESS);
+    } else {
+      simpleresult.setSearchResult(Components.interfaces.nsIAutoCompleteResult.RESULT_NOMATCH);
+    }
+    listener.onSearchResult(this, simpleresult);  
+  },
+
+  stopSearch : function stopSearch() {
+  }
+};
+
+
+var PrefAutoCompleteSearchFactory =
+{
+  createInstance : function(outer, iid)
+  {
+    if (outer != null) {
+      throw Components.results.NS_ERROR_NO_AGGREGATION;
+    }
+
+    return new PrefAutoCompleteSearchHandler().QueryInterface(iid);
+  }
+};
+
+
+var PrefAutoCompleteSearchModule =
+{
+  registerSelf : function(compMgr, fileSpec, location, type)
+  {
+    compMgr = compMgr.QueryInterface(Components.interfaces.nsIComponentRegistrar);
+
+    compMgr.registerFactoryLocation(PREF_AUTOCOMPLETE_SEARCH_CLSID,
+                                    "Preference Auto Complete Search",
+                                    PREF_AUTOCOMPLETE_SEARCH_CONTRACTID,
+                                    fileSpec,
+                                    location,
+                                    type);
+  },
+
+  unregisterSelf : function(compMgr, fileSpec, location)
+  {
+    compMgr = compMgr.QueryInterface(Components.interfaces.nsIComponentRegistrar);
+
+    compMgr.unregisterFactoryLocation(PREF_AUTOCOMPLETE_SEARCH_CLSID, fileSpec);
+  },
+
+  getClassObject : function(compMgr, cid, iid)
+  {
+    if (cid.equals(PREF_AUTOCOMPLETE_SEARCH_CLSID)) {
+      return PrefAutoCompleteSearchFactory;
+    }
+
+    if (!iid.equals(Components.interfaces.nsIFactory)) {
+      throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
+    }
+
+    throw Components.results.NS_ERROR_NO_INTERFACE;
+  },
+
+  canUnload : function(compMgr)
+  {
+    return true;
+  }
+};
+
+
+function NSGetModule(compMgr, fileSpec) {
+  return PrefAutoCompleteSearchModule;
+}
+