title: How to filter product with related product?
body: <p>I have to create filter option, which is related product. But I am not getting an idea about it. I have attach image url for reference. Here are product listing, which are related product. And I have to use related product in filter option</p>
  
  <p><a href="http://www.image-maps.com/uploaded_files/5201307260938309_Capture.PNG" rel="nofollow">http://www.image-maps.com/uploaded_files/5201307260938309_Capture.PNG</a></p>
  
  <p>Please help me asap.</p>