title: Show $cartItemsCount for each Magento website ID
body: <p>I have a magento multistore website where we have a landing page that links to three stores (and each store is on it’s own subdomain).  The carts/checkouts are all separate, but we have the customers set as global so they can navigate to each store without relogging in.  We would like to show a summary block on the landing page that lists the 3 carts and the number of items in each, as simple as</p>
  
  <p>Cart for Site A has 1 item <Br>
  Cart for Site B is empty <br>
  Cart for Site C has 2 items<br></p>
  
  <p>It seems like it should be simple, like:</p>
  
  <pre><code> $_cartQty = Mage::getSingleton('checkout/cart')-&gt;getItemsCount() 
  </code></pre>
  
  <p>but I am having a terrible time finding any answers.  Thanks!</p>