Index: wp-includes/admin-bar.php
===================================================================
--- wp-includes/admin-bar.php	(revision 22085)
+++ wp-includes/admin-bar.php	(working copy)
@@ -231,6 +231,8 @@
 	if ( $title != $blogname )
 		$title = trim( $title ) . '…';
 
+    $title = '<span class="ab-icon"></span><span class="ab-label">'.$title.'</span>';
+
 	$wp_admin_bar->add_menu( array(
 		'id'    => 'site-name',
 		'title' => $title,
@@ -287,9 +289,11 @@
 	if ( count( $wp_admin_bar->user->blogs ) < 1 && ! is_super_admin() )
 		return;
 
+    $title = '<span class="ab-icon"></span><span class="ab-label">' . _x( 'My Sites', 'admin bar menu group label' ) . '</span>';
+
 	$wp_admin_bar->add_menu( array(
 		'id'    => 'my-sites',
-		'title' => __( 'My Sites' ),
+		'title' => $title,
 		'href'  => admin_url( 'my-sites.php' ),
 	) );
 
@@ -369,7 +373,7 @@
 			$wp_admin_bar->add_menu( array(
 				'parent' => $menu_id,
 				'id'     => $menu_id . '-n',
-				'title'  => __( 'New Post' ),
+				'title'  => __( 'New Post' ), 
 				'href'   => admin_url( 'post-new.php' ),
 			) );
 			$wp_admin_bar->add_menu( array(
@@ -421,10 +425,13 @@
 function wp_admin_bar_edit_menu( $wp_admin_bar ) {
 	global $tag, $wp_the_query;
 
+    $html_before = '<span class="ab-icon"></span><span class="ab-label">';
+	$html_after = '</span>';
+
 	if ( is_admin() ) {
 		$current_screen = get_current_screen();
 		$post = get_post();
-
+		
 		if ( 'post' == $current_screen->base
 			&& 'add' != $current_screen->action
 			&& ( $post_type_object = get_post_type_object( $post->post_type ) )
@@ -434,7 +441,7 @@
 		{
 			$wp_admin_bar->add_menu( array(
 				'id' => 'view',
-				'title' => $post_type_object->labels->view_item,
+				'title' => $html_before . $post_type_object->labels->view_item . $html_after,
 				'href' => get_permalink( $post->ID )
 			) );
 		} elseif ( 'edit-tags' == $current_screen->base
@@ -444,7 +451,7 @@
 		{
 			$wp_admin_bar->add_menu( array(
 				'id' => 'view',
-				'title' => $tax->labels->view_item,
+				'title' => $html_before . $tax->labels->view_item . $html_after,
 				'href' => get_term_link( $tag )
 			) );
 		}
@@ -461,7 +468,7 @@
 		{
 			$wp_admin_bar->add_menu( array(
 				'id' => 'edit',
-				'title' => $post_type_object->labels->edit_item,
+				'title' => $html_before . $post_type_object->labels->edit_item . $html_after,
 				'href' => get_edit_post_link( $current_object->ID )
 			) );
 		} elseif ( ! empty( $current_object->taxonomy )
@@ -471,7 +478,7 @@
 		{
 			$wp_admin_bar->add_menu( array(
 				'id' => 'edit',
-				'title' => $tax->labels->edit_item,
+				'title' => $html_before . $tax->labels->edit_item . $html_after,
 				'href' => get_edit_term_link( $current_object->term_id, $current_object->taxonomy )
 			) );
 		}
Index: wp-includes/images/admin-bar-sprite.png
===================================================================
Cannot display: file marked as a binary type.
svn:mime-type = application/octet-stream
Index: wp-includes/css/admin-bar.css
===================================================================
--- wp-includes/css/admin-bar.css	(revision 22085)
+++ wp-includes/css/admin-bar.css	(working copy)
@@ -642,3 +642,88 @@
 * html #wpadminbar .menupop a span {
 	background-image: none;
 }
+
+/**
+ * Response admin bar
+ */
+ 
+#wp-admin-bar-my-sites .ab-icon,
+#wp-admin-bar-site-name .ab-icon,
+#wp-admin-bar-edit .ab-icon,
+#wp-admin-bar-view .ab-icon {
+    display:none;
+}
+
+@media (max-width: 900px) {
+    
+     #wpadminbar {
+         min-width: 600px;
+     }
+     
+     #wp-admin-bar-new-content .ab-label, 
+     #wp-admin-bar-search   {
+         display: none;
+     }
+     
+     #wp-admin-bar-my-account>.ab-item, 
+     #wp-admin-bar-my-sites>.ab-item, 
+     #wp-admin-bar-site-name>.ab-item, 
+     #wp-admin-bar-edit>.ab-item,
+     #wp-admin-bar-view>.ab-item {
+         font-size: 0;
+         overflow:hidden;
+     }
+     
+     /* user + avatar */
+     #wp-admin-bar-my-account .ab-item {
+         padding-left:6px !important;
+     }
+     
+     #wp-admin-bar-edit>.ab-item, 
+     #wp-admin-bar-view>.ab-item, 
+     #wp-admin-bar-my-sites>.ab-item, 
+     #wp-admin-bar-site-name>.ab-item {
+         padding: 0 10px !important;
+         width: 20px;
+     }
+     
+     /* my sites */
+     #wp-admin-bar-my-sites .ab-item .ab-icon {
+          display:block;
+          background-image: url(../images/admin-bar-sprite.png?d=20120830);
+          background-position:-1px -263px;
+          background-repeat: no-repeat;
+     }
+     #wp-admin-bar-my-sites .ab-item:hover .ab-icon,
+     #wp-admin-bar-my-sites.hover .ab-item .ab-icon {
+          background-position:-1px -283px;
+     }
+     
+     /* site name */
+     #wp-admin-bar-site-name .ab-item .ab-icon {
+          display: block;
+          background-image: url(../images/admin-bar-sprite.png?d=20120830);
+          background-position: -1px -223px;
+          background-repeat: no-repeat;
+      }
+      #wp-admin-bar-site-name .ab-item:hover .ab-icon, 
+      #wp-admin-bar-site-name.hover .ab-item .ab-icon {
+          background-position: -1px -243px;
+      }
+     
+     /* edit post */
+      #wp-admin-bar-edit .ab-item .ab-icon {
+           display: block;
+           background-image: url(../images/admin-bar-sprite.png?d=20120830);
+           background-position: -1px -303px;
+           background-repeat: no-repeat;
+       }
+     /* view post */
+     #wp-admin-bar-view .ab-item .ab-icon {
+            display: block;
+            background-image: url(../images/admin-bar-sprite.png?d=20120830);
+            background-position: -1px -303px;
+            background-repeat: no-repeat;
+    }
+
+}
\ No newline at end of file