Index: /CKEditor/branches/prototype/_source/core/config.js
===================================================================
--- /CKEditor/branches/prototype/_source/core/config.js	(revision 2646)
+++ /CKEditor/branches/prototype/_source/core/config.js	(revision 2647)
@@ -159,5 +159,5 @@
 	 * config.plugins = 'elementspath,toolbar,wysiwygarea';
 	 */
-	plugins : 'basicstyles,button,dialog,elementspath,htmldataprocessor,keystrokes,removeformat,smiley,sourcearea,tab,toolbar,wysiwygarea',
+	plugins : 'basicstyles,button,dialog,elementspath,htmldataprocessor,keystrokes,removeformat,smiley,sourcearea,tab,toolbar,wysiwygarea,horizontalrule',
 
 	/**
Index: /CKEditor/branches/prototype/_source/lang/en.js
===================================================================
--- /CKEditor/branches/prototype/_source/lang/en.js	(revision 2646)
+++ /CKEditor/branches/prototype/_source/lang/en.js	(revision 2647)
@@ -51,4 +51,5 @@
 	selectAll		: 'Select All',
 	removeFormat	: 'Remove Format',
+	horizontalrule		: "Insert Horizontal Line",
 
 	elementsPath :
Index: /CKEditor/branches/prototype/_source/plugins/toolbar/plugin.js
===================================================================
--- /CKEditor/branches/prototype/_source/plugins/toolbar/plugin.js	(revision 2646)
+++ /CKEditor/branches/prototype/_source/plugins/toolbar/plugin.js	(revision 2647)
@@ -222,4 +222,4 @@
 CKEDITOR.config.toolbar =
 [
-	[ 'Source', '-', 'Bold', 'Italic', 'Underline', 'Strike', '-', 'Subscript', 'Superscript', '-', 'SelectAll', 'RemoveFormat', '-', 'Smiley' ]
+	[ 'Source', '-', 'Bold', 'Italic', 'Underline', 'Strike', '-', 'Subscript', 'Superscript', '-', 'SelectAll', 'RemoveFormat', '-', 'Smiley','horizontalrule' ]
 ];
Index: /CKEditor/branches/prototype/_source/skins/default/toolbar.css
===================================================================
--- /CKEditor/branches/prototype/_source/skins/default/toolbar.css	(revision 2646)
+++ /CKEditor/branches/prototype/_source/skins/default/toolbar.css	(revision 2647)
@@ -176,2 +176,7 @@
 	background-position: 0 -640px;
 }
+
+.cke_skin_default a.cke_button_horizontalrule .cke_icon
+{
+	background-position: 0 -624px;
+}