diff -r f507feede89a -r 09a1c134465b web/wp-admin/menu-header.php
--- a/web/wp-admin/menu-header.php	Wed Dec 19 12:35:13 2012 -0800
+++ b/web/wp-admin/menu-header.php	Wed Dec 19 17:46:52 2012 -0800
@@ -41,7 +41,7 @@
 	foreach ( $menu as $key => $item ) {
 		$admin_is_parent = false;
 		$class = array();
-		$aria_attributes = 'tabindex="1"';
+		$aria_attributes = '';
 
 		if ( $first ) {
 			$class[] = 'wp-first-item';
@@ -59,7 +59,7 @@
 		} else {
 			$class[] = 'wp-not-current-submenu';
 			if ( ! empty( $submenu_items ) )
-				$aria_attributes .= ' aria-haspopup="true"';
+				$aria_attributes .= 'aria-haspopup="true"';
 		}
 
 		if ( ! empty( $item[4] ) )
@@ -68,8 +68,10 @@
 		$class = $class ? ' class="' . join( ' ', $class ) . '"' : '';
 		$id = ! empty( $item[5] ) ? ' id="' . preg_replace( '|[^a-zA-Z0-9_:.]|', '-', $item[5] ) . '"' : '';
 		$img = '';
+		// if the string 'none' (previously 'div') is passed instead of an URL, don't output the default menu image
+		// so an icon can be added to div.wp-menu-image as background with CSS.
 		if ( ! empty( $item[6] ) )
-			$img = ( 'div' === $item[6] ) ? '<br />' : '<img src="' . $item[6] . '" alt="" />';
+			$img = ( 'none' === $item[6] || 'div' === $item[6] ) ? '<br />' : '<img src="' . $item[6] . '" alt="" />';
 		$arrow = '<div class="wp-menu-arrow"><div></div></div>';
 
 		$title = wptexturize( $item[0] );
@@ -87,9 +89,9 @@
 				$menu_file = substr( $menu_file, 0, $pos );
 			if ( ! empty( $menu_hook ) || ( ('index.php' != $submenu_items[0][2]) && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) ) ) {
 				$admin_is_parent = true;
-				echo "<div class='wp-menu-image'><a href='admin.php?page={$submenu_items[0][2]}' aria-label='$aria_label'>$img</a></div>$arrow<a href='admin.php?page={$submenu_items[0][2]}'$class $aria_attributes>$title</a>";
+				echo "<a href='admin.php?page={$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image'>$img</div><div class='wp-menu-name'>$title</div></a>";
 			} else {
-				echo "\n\t<div class='wp-menu-image'><a href='{$submenu_items[0][2]}' aria-label='$aria_label'>$img</a></div>$arrow<a href='{$submenu_items[0][2]}'$class $aria_attributes>$title</a>";
+				echo "\n\t<a href='{$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image'>$img</div><div class='wp-menu-name'>$title</div></a>";
 			}
 		} elseif ( ! empty( $item[2] ) && current_user_can( $item[1] ) ) {
 			$menu_hook = get_plugin_page_hook( $item[2], 'admin.php' );
@@ -98,21 +100,21 @@
 				$menu_file = substr( $menu_file, 0, $pos );
 			if ( ! empty( $menu_hook ) || ( ('index.php' != $item[2]) && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) ) ) {
 				$admin_is_parent = true;
-				echo "\n\t<div class='wp-menu-image'><a href='admin.php?page={$item[2]}' aria-label='$aria_label'>$img</a></div>$arrow<a href='admin.php?page={$item[2]}'$class $aria_attributes>{$item[0]}</a>";
+				echo "\n\t<a href='admin.php?page={$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image'>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
 			} else {
-				echo "\n\t<div class='wp-menu-image'><a href='{$item[2]}' aria-label='$aria_label'>$img</a></div>$arrow<a href='{$item[2]}'$class $aria_attributes>{$item[0]}</a>";
+				echo "\n\t<a href='{$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image'>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
 			}
 		}
 
 		if ( ! empty( $submenu_items ) ) {
-			echo "\n\t<div class='wp-submenu'><div class='wp-submenu-wrap'>";
-			echo "<div class='wp-submenu-head'>{$item[0]}</div><ul>";
+			echo "\n\t<ul class='wp-submenu wp-submenu-wrap'>";
+			echo "<li class='wp-submenu-head'>{$item[0]}</li>";
+
 			$first = true;
 			foreach ( $submenu_items as $sub_key => $sub_item ) {
 				if ( ! current_user_can( $sub_item[1] ) )
 					continue;
 
-				$aria_attributes = 'tabindex="1"';
 				$class = array();
 				if ( $first ) {
 					$class[] = 'wp-first-item';
@@ -156,12 +158,12 @@
 						$sub_item_url = add_query_arg( array('page' => $sub_item[2]), 'admin.php' );
 
 					$sub_item_url = esc_url( $sub_item_url );
-					echo "<li$class><a href='$sub_item_url'$class $aria_attributes>$title</a></li>";
+					echo "<li$class><a href='$sub_item_url'$class>$title</a></li>";
 				} else {
-					echo "<li$class><a href='{$sub_item[2]}'$class $aria_attributes>$title</a></li>";
+					echo "<li$class><a href='{$sub_item[2]}'$class>$title</a></li>";
 				}
 			}
-			echo "</ul></div></div>";
+			echo "</ul>";
 		}
 		echo "</li>";
 	}