forgot to add file as part of previous check-in to 19557.

suite/common/sidebar/sidebarOverlay.css

@@ -0,0 +1,74 @@
+/* 
+ * 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 Mozilla Communicator.
+ * 
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corp. Portions created by Netscape Communications
+ * Corp. are Copyright (C) 1999 Netscape Communications Corp. All
+ * Rights Reserved.
+ * 
+ * Contributor(s): Stephen Lamm <slamm@netscape.com>
+ */ 
+
+/** sidebarOverlay.css [CONTENT]
+ *   This file is for style rules essential for correct sidebar operation.
+ *   These rules will not change on a skin-by-skin basis. 
+ **/ 
+ 
+#sidebar-box {
+    width: 162px;
+    min-height: 10px;
+    min-width: 30px;
+    max-width: 400px;
+}
+
+#sidebar-panels {
+    min-width: 1px;
+    min-height: 10px;
+}
+
+.iframe-panel {
+    min-width: 1px;  
+    min-height: 1px;
+}
+
+/*
+ *    Sidebar and Panel title buttons
+ */
+sidebarheader[type="box"] {
+    behavior: url(chrome://communicator/content/sidebar/sidebarBindings.xml#sidebar-header-box);
+}
+sidebarheader[type="splitter"] {
+    behavior: url(chrome://communicator/content/sidebar/sidebarBindings.xml#sidebar-header-splitter);
+    /* a vertical splitter */
+    cursor: n-resize;
+}
+
+.sidebarheader-main {
+    min-width: 1px;
+    min-height: 1px;
+}
+
+/**
+ * texttab folder lookalike e.g. for sidebar panel headers
+ */
+  .box-texttab
+    {
+      min-height          : 10px;
+      min-width           : 10px;
+    }
+
+  .box-texttab-right-space 
+    {
+      min-width           : 1px;
+    }
+