diff --git a/wp-admin/css/nav-menu-rtl.css b/wp-admin/css/nav-menu-rtl.css
new file mode 100644
index 000000000..545d6b5bc
--- /dev/null
+++ b/wp-admin/css/nav-menu-rtl.css
@@ -0,0 +1 @@
+.howto span{float:right;}.menu-item-textbox{float:left;}.add-to-menu{float:left;}.menu-item-title input[type="checkbox"]{margin-left:3px;}.menu li dl dt{padding-left:0;padding-right:10px;}.menu li ul li{margin-left:0;margin-right:20px;}.menu li .item-title{margin-right:0;margin-left:18em;}.item-controls{right:auto;left:15px;}.item-type{padding-right:0;padding-left:10px;}
\ No newline at end of file
diff --git a/wp-admin/css/nav-menu-rtl.dev.css b/wp-admin/css/nav-menu-rtl.dev.css
new file mode 100644
index 000000000..3ea29a28d
--- /dev/null
+++ b/wp-admin/css/nav-menu-rtl.dev.css
@@ -0,0 +1,32 @@
+.howto span { 
+	float: right; 
+}
+.menu-item-textbox { 
+	float: left; 
+}
+.add-to-menu { 
+	float: left; 
+}
+.menu-item-title input[type="checkbox"] {
+	margin-left: 3px; 
+}
+.menu li dl dt {
+	padding-left: 0;
+	padding-right: 10px;
+}
+.menu li ul li {
+	margin-left: 0;
+	margin-right: 20px; 
+}
+.menu li .item-title { 
+	margin-right: 0;
+	margin-left: 18em; 
+}
+.item-controls { 
+	right: auto;
+	left: 15px; 
+}
+.item-type {
+	padding-right: 0;
+	padding-left: 10px; 
+}
\ No newline at end of file
diff --git a/wp-includes/script-loader.php b/wp-includes/script-loader.php
index 4b80045be..2e86b775b 100644
--- a/wp-includes/script-loader.php
+++ b/wp-includes/script-loader.php
@@ -437,7 +437,7 @@ function wp_default_styles( &$styles ) {
 
 	$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '.dev' : '';
 
-	$rtl_styles = array( 'wp-admin', 'global', 'colors', 'dashboard', 'ie', 'install', 'login', 'media', 'theme-editor', 'upload', 'widgets', 'press-this', 'plugin-install', 'farbtastic' );
+	$rtl_styles = array( 'wp-admin', 'global', 'colors', 'dashboard', 'ie', 'install', 'login', 'media', 'theme-editor', 'upload', 'widgets', 'press-this', 'plugin-install', 'nav-menu', 'farbtastic' );
 	// Any rtl stylesheets that don't have a .dev version for ltr
 	$no_suffix = array( 'farbtastic' );
 
@@ -473,7 +473,7 @@ function wp_default_styles( &$styles ) {
 	$styles->add( 'farbtastic', '/wp-admin/css/farbtastic.css', array(), '1.2' );
 	$styles->add( 'jcrop', '/wp-includes/js/jcrop/jquery.Jcrop.css', array(), '0.9.8' );
 	$styles->add( 'imgareaselect', '/wp-includes/js/imgareaselect/imgareaselect.css', array(), '0.9.1' );
-	$styles->add( 'nav-menu', "/wp-admin/css/nav-menu$suffix.css", array(), '20100426' );
+	$styles->add( 'nav-menu', "/wp-admin/css/nav-menu$suffix.css", array(), '20100428' );
 
 	foreach ( $rtl_styles as $rtl_style ) {
 		$styles->add_data( $rtl_style, 'rtl', true );