title: Magento - Check if subcategory exists in current category
body: <p>I have the following category setup in my  magento store:</p>
  
  <pre><code>store root
  |
  bedroom    kitchen     bathroom    
  |            |            |            
  furniture  furniture   furniture         
  lighting   lighting    misc
  misc   
  </code></pre>
  
  <p>I need to be able to check if the category <code>misc</code> exists as a subcategory in my current category or not, and if so show a particular block.</p>
  
  <p>So if i was in the kitchen category it would not show but in bedroom and bathroom it would.</p>
  
  <p>How can i do this this check?              </p>