title: Magento - Trouble getting Sidebar navigation to show on category pages
body: <p>This is perplexing me somewhat.
  I'm on magento 1.7.</p>
  
  <p>I have a left sidebar on all pages, and I'm trying to add a vertical navigation block to this side bar, to appear on all pages. So far, through editing catalog.xml, I can get it to appear on the front page, and the individual product pages, but it disappears when I visit a category page (the one that lists all the products in a category). When I try to add this block in via the "Custom Design" option for the category in the backend, it inserts the block into the sidebar 5 times, one on top of the other. </p>
  
  <p>In catalog xml, right under &lt; !-- Mage_Catalog -->
          </p>
  
  <pre><code>&lt;block type="catalog/navigation" name="catalog.leftnav" template="catalog/navigation/vert_nav.phtml" before="cart_sidebar" /&gt;
  </code></pre>
  
  <p>I think I've tried placing this is every place in catalog.xml that seemed to make sense, but I just can't figure out why I can't target the categories, and why the multiple blocks problem is happening. </p>
  
  <p>I have also tried to add the block to page.xml, and although that works for the front page, it doesn't for the categories.</p>
  
  <p>Thanks in advance</p>