Index: wp-admin/menu-header.php
===================================================================
--- wp-admin/menu-header.php	(revision 19482)
+++ wp-admin/menu-header.php	(working copy)
@@ -41,6 +41,7 @@
 	foreach ( $menu as $key => $item ) {
 		$admin_is_parent = false;
 		$class = array();
+		$aria_attributes = 'tabindex="1" role="menuitem"';
 
 		if ( $first ) {
 			$class[] = 'wp-first-item';
@@ -53,16 +54,18 @@
 			$submenu_items = $submenu[$item[2]];
 		}
 
-		if ( ( $parent_file && $item[2] == $parent_file ) || ( empty($typenow) && $self == $item[2] ) )
+		if ( ( $parent_file && $item[2] == $parent_file ) || ( empty($typenow) && $self == $item[2] ) ) {
 			$class[] = ! empty( $submenu_items ) ? 'wp-has-current-submenu wp-menu-open' : 'current';
-		else
+		} else {
 			$class[] = 'wp-not-current-submenu';
+			if ( ! empty( $submenu_items ) )
+				$aria_attributes .= ' aria-haspopup="true"';	
+		}
 
 		if ( ! empty( $item[4] ) )
 			$class[] = $item[4];
 
 		$class = $class ? ' class="' . join( ' ', $class ) . '"' : '';
-		$tabindex = ' tabindex="1"';
 		$id = ! empty( $item[5] ) ? ' id="' . preg_replace( '|[^a-zA-Z0-9_:.]|', '-', $item[5] ) . '"' : '';
 		$img = '';
 		if ( ! empty( $item[6] ) )
@@ -83,9 +86,9 @@
 				$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]}'>$img</a></div>$arrow<a href='admin.php?page={$submenu_items[0][2]}'$class$tabindex>$title</a>";
+				echo "<div class='wp-menu-image'><a href='admin.php?page={$submenu_items[0][2]}'>$img</a></div>$arrow<a href='admin.php?page={$submenu_items[0][2]}'$class $aria_attributes>$title</a>";
 			} else {
-				echo "\n\t<div class='wp-menu-image'><a href='{$submenu_items[0][2]}'>$img</a></div>$arrow<a href='{$submenu_items[0][2]}'$class$tabindex>$title</a>";
+				echo "\n\t<div class='wp-menu-image'><a href='{$submenu_items[0][2]}'>$img</a></div>$arrow<a href='{$submenu_items[0][2]}'$class $aria_attributes>$title</a>";
 			}
 		} elseif ( ! empty( $item[2] ) && current_user_can( $item[1] ) ) {
 			$menu_hook = get_plugin_page_hook( $item[2], 'admin.php' );
@@ -94,9 +97,9 @@
 				$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]}'>$img</a></div>$arrow<a href='admin.php?page={$item[2]}'$class$tabindex>{$item[0]}</a>";
+				echo "\n\t<div class='wp-menu-image'><a href='admin.php?page={$item[2]}'>$img</a></div>$arrow<a href='admin.php?page={$item[2]}'$class $aria_attributes>{$item[0]}</a>";
 			} else {
-				echo "\n\t<div class='wp-menu-image'><a href='{$item[2]}'>$img</a></div>$arrow<a href='{$item[2]}'$class$tabindex>{$item[0]}</a>";
+				echo "\n\t<div class='wp-menu-image'><a href='{$item[2]}'>$img</a></div>$arrow<a href='{$item[2]}'$class $aria_attributes>{$item[0]}</a>";
 			}
 		}
 
@@ -151,9 +154,9 @@
 						$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$tabindex>$title</a></li>";
+					echo "<li$class><a href='$sub_item_url'$class $aria_attributes>$title</a></li>";
 				} else {
-					echo "<li$class><a href='{$sub_item[2]}'$class$tabindex>$title</a></li>";
+					echo "<li$class><a href='{$sub_item[2]}'$class $aria_attributes>$title</a></li>";
 				}
 			}
 			echo "</ul></div></div>";
@@ -171,7 +174,7 @@
 <div id="adminmenuback"></div>
 <div id="adminmenuwrap">
 <div id="adminmenushadow"></div>
-<ul id="adminmenu">
+<ul id="adminmenu" role="menu">
 
 <?php
 
Index: wp-includes/class-wp-admin-bar.php
===================================================================
--- wp-includes/class-wp-admin-bar.php	(revision 19482)
+++ wp-includes/class-wp-admin-bar.php	(working copy)
@@ -179,7 +179,7 @@
 		}
 
 		?>
-		<div id="wpadminbar" class="<?php echo $class; ?>">
+		<div id="wpadminbar" class="<?php echo $class; ?>" role="menubar">
 			<div class="quicklinks">
 				<?php foreach ( $this->root->children as $group ) {
 					$this->render_group( $group, 'ab-top-menu' );
@@ -240,17 +240,24 @@
 
 		$is_parent = (bool) $node->children;
 		$has_link  = (bool) $node->href;
+		$tabindex = isset($node->meta['tabindex']) ? (int) $node->meta['tabindex'] : 10;
 
-		$menuclass = $is_parent ? 'menupop' : '';
+		$menuclass = '';
+		$aria_attributes = 'tabindex="' . $tabindex . '" role="menuitem"';
+
+		if ( $is_parent ) {
+			$menuclass = 'menupop';
+			$aria_attributes .= ' aria-haspopup="true"';
+		}
+
 		if ( ! empty( $node->meta['class'] ) )
 			$menuclass .= ' ' . $node->meta['class'];
 
-		$tabindex = !empty($node->meta['tabindex']) ? $node->meta['tabindex'] : 10;
 		?>
 
 		<li id="<?php echo esc_attr( "wp-admin-bar-{$node->id}" ); ?>" class="<?php echo esc_attr( $menuclass ); ?>"><?php
 			if ( $has_link ):
-				?><a class="ab-item" tabindex="<?php echo (int) $tabindex; ?>" href="<?php echo esc_url( $node->href ) ?>"<?php
+				?><a class="ab-item" <?php echo $aria_attributes; ?> href="<?php echo esc_url( $node->href ) ?>"<?php
 					if ( ! empty( $node->meta['onclick'] ) ) :
 						?> onclick="<?php echo esc_js( $node->meta['onclick'] ); ?>"<?php
 					endif;
@@ -262,7 +269,7 @@
 				endif;
 				?>><?php
 			else:
-				?><div class="ab-item ab-empty-item" tabindex="<?php echo (int) $tabindex; ?>"><?php
+				?><div class="ab-item ab-empty-item" <?php echo $aria_attributes; ?>><?php
 			endif;
 
 			echo $node->title;
Index: wp-includes/js/admin-bar.dev.js
===================================================================
--- wp-includes/js/admin-bar.dev.js	(revision 19482)
+++ wp-includes/js/admin-bar.dev.js	(working copy)
@@ -37,11 +37,24 @@
 
 			e.stopPropagation();
 			e.preventDefault();
+
 			target.parent().toggleClass('hover');
-
 			target.siblings('.ab-sub-wrapper').find('.ab-item').each(refresh);
 		}).each(refresh);
 
+		$('#wpadminbar .ab-item').bind('keydown.adminbar', function(e){
+			if ( e.which != 27 )
+				return;
+
+			var target = $(e.target);
+
+			e.stopPropagation();
+			e.preventDefault();
+
+			target.closest('.hover').removeClass('hover').children('.ab-item').focus();
+			target.siblings('.ab-sub-wrapper').find('.ab-item').each(refresh);
+		});
+
 	});
 } else {
 	(function(d, w) {
Index: wp-includes/js/admin-bar.js
===================================================================
--- wp-includes/js/admin-bar.js	(revision 19482)
+++ wp-includes/js/admin-bar.js	(working copy)
@@ -1 +1 @@
-if(typeof(jQuery)!="undefined"){if(typeof(jQuery.fn.hoverIntent)=="undefined"){(function(b){b.fn.hoverIntent=function(p,r){var g={sensitivity:7,interval:100,timeout:0};g=b.extend(g,r?{over:p,out:r}:p);var a,f,t,v;var u=function(c){a=c.pageX;f=c.pageY};var w=function(c,d){d.hoverIntent_t=clearTimeout(d.hoverIntent_t);if((Math.abs(t-a)+Math.abs(v-f))<g.sensitivity){b(d).unbind("mousemove",u);d.hoverIntent_s=1;return g.over.apply(d,[c])}else{t=a;v=f;d.hoverIntent_t=setTimeout(function(){w(c,d)},g.interval)}};var s=function(c,d){d.hoverIntent_t=clearTimeout(d.hoverIntent_t);d.hoverIntent_s=0;return g.out.apply(d,[c])};var x=function(e){var d=this;var c=(e.type=="mouseover"?e.fromElement:e.toElement)||e.relatedTarget;while(c&&c!=this){try{c=c.parentNode}catch(e){c=this}}if(c==this){if(b.browser.mozilla){if(e.type=="mouseout"){d.mtout=setTimeout(function(){q(e,d)},30)}else{if(d.mtout){d.mtout=clearTimeout(d.mtout)}}}return}else{if(d.mtout){d.mtout=clearTimeout(d.mtout)}q(e,d)}};var q=function(e,d){var c=jQuery.extend({},e);if(d.hoverIntent_t){d.hoverIntent_t=clearTimeout(d.hoverIntent_t)}if(e.type=="mouseover"){t=c.pageX;v=c.pageY;b(d).bind("mousemove",u);if(d.hoverIntent_s!=1){d.hoverIntent_t=setTimeout(function(){w(c,d)},g.interval)}}else{b(d).unbind("mousemove",u);if(d.hoverIntent_s==1){d.hoverIntent_t=setTimeout(function(){s(c,d)},g.timeout)}}};return this.mouseover(x).mouseout(x)}})(jQuery)}jQuery(document).ready(function(b){var a=function(c,e){var f=b(e),d=f.attr("tabindex");if(d){f.attr("tabindex","0").attr("tabindex",d)}};b("#wpadminbar").removeClass("nojq").removeClass("nojs").find("li.menupop").hoverIntent({over:function(c){b(this).addClass("hover")},out:function(c){b(this).removeClass("hover")},timeout:180,sensitivity:7,interval:100});b("#wp-admin-bar-get-shortlink").click(function(c){c.preventDefault();b(this).addClass("selected").children(".shortlink-input").blur(function(){b(this).parents("#wp-admin-bar-get-shortlink").removeClass("selected")}).focus().select()});b("#wpadminbar li.menupop > .ab-item").bind("keydown.adminbar",function(d){if(d.which!=13){return}var c=b(d.target);d.stopPropagation();d.preventDefault();c.parent().toggleClass("hover");c.siblings(".ab-sub-wrapper").find(".ab-item").each(a)}).each(a)})}else{(function(i,k){var c=function(n,m,d){if(n.addEventListener){n.addEventListener(m,d,false)}else{if(n.attachEvent){n.attachEvent("on"+m,function(){return d.call(n,window.event)})}}},e,f=new RegExp("\\bhover\\b","g"),a=[],j=new RegExp("\\bselected\\b","g"),g=function(m){var d=a.length;while(d--){if(a[d]&&m==a[d][1]){return a[d][0]}}return false},h=function(s){var n,d,q,m,p,r,u=[],o=0;while(s&&s!=e&&s!=i){if("LI"==s.nodeName.toUpperCase()){u[u.length]=s;d=g(s);if(d){clearTimeout(d)}s.className=s.className?(s.className.replace(f,"")+" hover"):"hover";m=s}s=s.parentNode}if(m&&m.parentNode){p=m.parentNode;if(p&&"UL"==p.nodeName.toUpperCase()){n=p.childNodes.length;while(n--){r=p.childNodes[n];if(r!=m){r.className=r.className?r.className.replace(j,""):""}}}}n=a.length;while(n--){q=false;o=u.length;while(o--){if(u[o]==a[n][1]){q=true}}if(!q){a[n][1].className=a[n][1].className?a[n][1].className.replace(f,""):""}}},l=function(d){while(d&&d!=e&&d!=i){if("LI"==d.nodeName.toUpperCase()){(function(m){var n=setTimeout(function(){m.className=m.className?m.className.replace(f,""):""},500);a[a.length]=[n,m]})(d)}d=d.parentNode}},b=function(p){var n,d,o,m=p.target||p.srcElement;while(true){if(!m||m==i||m==e){return}if(m.id&&m.id=="wp-admin-bar-get-shortlink"){break}m=m.parentNode}if(p.preventDefault){p.preventDefault()}p.returnValue=false;if(-1==m.className.indexOf("selected")){m.className+=" selected"}for(n=0,d=m.childNodes.length;n<d;n++){o=m.childNodes[n];if(o.className&&-1!=o.className.indexOf("shortlink-input")){o.focus();o.select();o.onblur=function(){m.className=m.className?m.className.replace(j,""):""};break}}return false};c(k,"load",function(){e=i.getElementById("wpadminbar");if(i.body&&e){i.body.appendChild(e);if(e.className){e.className=e.className.replace(/nojs/,"")}c(e,"mouseover",function(d){h(d.target||d.srcElement)});c(e,"mouseout",function(d){l(d.target||d.srcElement)});c(e,"click",b)}if(k.location.hash){k.scrollBy(0,-32)}})})(document,window)};
\ No newline at end of file
+if(typeof(jQuery)!="undefined"){if(typeof(jQuery.fn.hoverIntent)=="undefined"){(function(b){b.fn.hoverIntent=function(p,r){var g={sensitivity:7,interval:100,timeout:0};g=b.extend(g,r?{over:p,out:r}:p);var a,f,t,v;var u=function(c){a=c.pageX;f=c.pageY};var w=function(c,d){d.hoverIntent_t=clearTimeout(d.hoverIntent_t);if((Math.abs(t-a)+Math.abs(v-f))<g.sensitivity){b(d).unbind("mousemove",u);d.hoverIntent_s=1;return g.over.apply(d,[c])}else{t=a;v=f;d.hoverIntent_t=setTimeout(function(){w(c,d)},g.interval)}};var s=function(c,d){d.hoverIntent_t=clearTimeout(d.hoverIntent_t);d.hoverIntent_s=0;return g.out.apply(d,[c])};var x=function(e){var d=this;var c=(e.type=="mouseover"?e.fromElement:e.toElement)||e.relatedTarget;while(c&&c!=this){try{c=c.parentNode}catch(e){c=this}}if(c==this){if(b.browser.mozilla){if(e.type=="mouseout"){d.mtout=setTimeout(function(){q(e,d)},30)}else{if(d.mtout){d.mtout=clearTimeout(d.mtout)}}}return}else{if(d.mtout){d.mtout=clearTimeout(d.mtout)}q(e,d)}};var q=function(e,d){var c=jQuery.extend({},e);if(d.hoverIntent_t){d.hoverIntent_t=clearTimeout(d.hoverIntent_t)}if(e.type=="mouseover"){t=c.pageX;v=c.pageY;b(d).bind("mousemove",u);if(d.hoverIntent_s!=1){d.hoverIntent_t=setTimeout(function(){w(c,d)},g.interval)}}else{b(d).unbind("mousemove",u);if(d.hoverIntent_s==1){d.hoverIntent_t=setTimeout(function(){s(c,d)},g.timeout)}}};return this.mouseover(x).mouseout(x)}})(jQuery)}jQuery(document).ready(function(b){var a=function(c,e){var f=b(e),d=f.attr("tabindex");if(d){f.attr("tabindex","0").attr("tabindex",d)}};b("#wpadminbar").removeClass("nojq").removeClass("nojs").find("li.menupop").hoverIntent({over:function(c){b(this).addClass("hover")},out:function(c){b(this).removeClass("hover")},timeout:180,sensitivity:7,interval:100});b("#wp-admin-bar-get-shortlink").click(function(c){c.preventDefault();b(this).addClass("selected").children(".shortlink-input").blur(function(){b(this).parents("#wp-admin-bar-get-shortlink").removeClass("selected")}).focus().select()});b("#wpadminbar li.menupop > .ab-item").bind("keydown.adminbar",function(d){if(d.which!=13){return}var c=b(d.target);d.stopPropagation();d.preventDefault();c.parent().toggleClass("hover");c.siblings(".ab-sub-wrapper").find(".ab-item").each(a)}).each(a);b("#wpadminbar .ab-item").bind("keydown.adminbar",function(d){if(d.which!=27){return}var c=b(d.target);d.stopPropagation();d.preventDefault();c.closest(".hover").removeClass("hover").children(".ab-item").focus();c.siblings(".ab-sub-wrapper").find(".ab-item").each(a)})})}else{(function(i,k){var c=function(n,m,d){if(n.addEventListener){n.addEventListener(m,d,false)}else{if(n.attachEvent){n.attachEvent("on"+m,function(){return d.call(n,window.event)})}}},e,f=new RegExp("\\bhover\\b","g"),a=[],j=new RegExp("\\bselected\\b","g"),g=function(m){var d=a.length;while(d--){if(a[d]&&m==a[d][1]){return a[d][0]}}return false},h=function(s){var n,d,q,m,p,r,u=[],o=0;while(s&&s!=e&&s!=i){if("LI"==s.nodeName.toUpperCase()){u[u.length]=s;d=g(s);if(d){clearTimeout(d)}s.className=s.className?(s.className.replace(f,"")+" hover"):"hover";m=s}s=s.parentNode}if(m&&m.parentNode){p=m.parentNode;if(p&&"UL"==p.nodeName.toUpperCase()){n=p.childNodes.length;while(n--){r=p.childNodes[n];if(r!=m){r.className=r.className?r.className.replace(j,""):""}}}}n=a.length;while(n--){q=false;o=u.length;while(o--){if(u[o]==a[n][1]){q=true}}if(!q){a[n][1].className=a[n][1].className?a[n][1].className.replace(f,""):""}}},l=function(d){while(d&&d!=e&&d!=i){if("LI"==d.nodeName.toUpperCase()){(function(m){var n=setTimeout(function(){m.className=m.className?m.className.replace(f,""):""},500);a[a.length]=[n,m]})(d)}d=d.parentNode}},b=function(p){var n,d,o,m=p.target||p.srcElement;while(true){if(!m||m==i||m==e){return}if(m.id&&m.id=="wp-admin-bar-get-shortlink"){break}m=m.parentNode}if(p.preventDefault){p.preventDefault()}p.returnValue=false;if(-1==m.className.indexOf("selected")){m.className+=" selected"}for(n=0,d=m.childNodes.length;n<d;n++){o=m.childNodes[n];if(o.className&&-1!=o.className.indexOf("shortlink-input")){o.focus();o.select();o.onblur=function(){m.className=m.className?m.className.replace(j,""):""};break}}return false};c(k,"load",function(){e=i.getElementById("wpadminbar");if(i.body&&e){i.body.appendChild(e);if(e.className){e.className=e.className.replace(/nojs/,"")}c(e,"mouseover",function(d){h(d.target||d.srcElement)});c(e,"mouseout",function(d){l(d.target||d.srcElement)});c(e,"click",b)}if(k.location.hash){k.scrollBy(0,-32)}})})(document,window)};
\ No newline at end of file
Index: wp-includes/script-loader.php
===================================================================
--- wp-includes/script-loader.php	(revision 19482)
+++ wp-includes/script-loader.php	(working copy)
@@ -260,7 +260,7 @@
 
 	$scripts->add( 'user-profile', "/wp-admin/js/user-profile$suffix.js", array( 'jquery', 'password-strength-meter' ), '20110628', 1 );
 
-	$scripts->add( 'admin-bar', "/wp-includes/js/admin-bar$suffix.js", false, '20111127', 1 );
+	$scripts->add( 'admin-bar', "/wp-includes/js/admin-bar$suffix.js", false, '20111129', 1 );
 
 	$scripts->add( 'wplink', "/wp-includes/js/wplink$suffix.js", array( 'jquery', 'wpdialogs' ), '20111128', 1 );
 	$scripts->localize( 'wplink', 'wpLinkL10n', array(