diff --git a/xpfe/components/sidebar/resources/sidebar.css b/xpfe/components/sidebar/resources/sidebar.css
deleted file mode 100644
index b8ef11438a7c..000000000000
--- a/xpfe/components/sidebar/resources/sidebar.css
+++ /dev/null
@@ -1,135 +0,0 @@
-/* -*- Mode: C; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL.  You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation.  Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
- * Reserved.
- */
-
-/*
-
-   Style rules specific to the Sidebar.
-
-*/
-
-iframe.notlast
-{
-  height: 125px;
-}
-
-iframe.panelframe
-{
-  border: 0px;
-}
-
-/*
-treecell
-{ 
- font-family: Verdana, Sans-Serif;
- font-size: 8pt;
-}
-*/ 
-
-treecell[sortActive="true"][sortDirection="ascending"]
-{
- background-color: green;
-}
- 
-treecell[sortActive="true"][sortDirection="descending"]
-{
- background-color: red;
-}
- 
-treecol[sortActive="true"]
-{
-  background-color: lightgreen;
-}
-
-treehead > treerow > treecell
-{ 
- background-color: #c0c0c0; 
- border: outset 1px;
- border-color: white #707070 #707070 white;
- vertical-align: middle;
-}
-
-treeitem[container="true"][open="true"][loading="true"] > treerow > treecell > .tree-icon
-{
- list-style-image: url("resource:/res/rdf/loading.gif") ! important ;
-}
-
-treeitem[type="http://home.netscape.com/NC-rdf#FileSystemObject"][container="true"][open="true"] > treerow > treecell > .tree-icon
-{
- list-style-image: url("resource:/res/rdf/folder-open.gif");
-}
-
-treeitem[type="http://home.netscape.com/NC-rdf#FileSystemObject"][container="true"] > treerow > treecell > .tree-icon
-{
- list-style-image: url("resource:/resrdf/folder-closed.gif");
-}
-
-treeitem[type="http://home.netscape.com/NC-rdf#FileSystemObject"] > treerow > treecell > .tree-icon
-{
- list-style-image: url("resource:/res/rdf/article.gif");
-}
-
-treeitem[container="true"][open="true"] > treerow > treecell > .tree-icon
-{
- list-style-image: url("resource:/res/rdf/folder-open.gif");
-}
-
-treeitem[container="true"] > treerow > treecell > .tree-icon
-{
- list-style-image: url("resource:/res/rdf/folder-closed.gif");
-}
-
-/*
- *  Sidebar and Panel title buttons
- */
-box#sidebox
-{
-  width: 100%;
-  height: 100%;
-}
-
-box.sidebartitle
-{
-  background-color: #666699;
-  border-top: 1px solid #9999CC;
-}
-
-box.panelbar
-{
-  background-color: #339999;
-  font-weight: bold;
-  border-top: 1px solid #99CCCC;
-}
-
-div.sidebartitlelabel
-{
-  color: white;
-  padding: 5px;
-}
-
-titledbutton.paneltitle
-{ 
-  color: white;
-}
-
-treecell titledbutton
-{
-  color: inherit;
-  list-style-image: inherit;
-}
-
-