Add Links to WordPress 3.3 Multisite Toolbar

I need to add a link to the toolbar to be used by the Super Admin of a Multisite setup managing several sites.

The link I need to add to the toolbar is simply a shortcut to the same menu item in each specific admin area. The problem is, when I add a link to the toolbar within the admin area of one site, and then enter the admin area of a second site – clicking the link on the toolbar of the second site takes me back to the admin area of the first.

I have found the following script that will add a link in a non-WPMS environment, for a link with 2 sub-menus:

<?php

add_action('admin_bar_menu', 'add_toolbar_items', 100);
function add_toolbar_items($admin_bar){
	$admin_bar->add_menu( array(
		'id'    => 'my-item',
		'title' => 'My Item',
		'href'  => '#',
		'meta'  => array(
			'title' => __('My Item'),
		),
	));
	$admin_bar->add_menu( array(
		'id'    => 'my-sub-item',
		'parent' => 'my-item',
		'title' => 'My Sub Menu Item',
		'href'  => '#',
		'meta'  => array(
			'title' => __('My Sub Menu Item'),
			'target' => '_blank',
			'class' => 'my_menu_item_class'
		),
	));
	$admin_bar->add_menu( array(
		'id'    => 'my-second-sub-item',
		'parent' => 'my-item',
		'title' => 'My Second Sub Menu Item',
		'href'  => '#',
		'meta'  => array(
			'title' => __('My Second Sub Menu Item'),
			'target' => '_blank',
			'class' => 'my_menu_item_class'
		),
	));
}

?>

Is there any way this script can realise which multisite I am in, and take me to the menu item within the correct admin area? Any help would be much appreciated!