title: Hover over image and have surrounding images darken
body: <p>For clarification: I'm not asking how to darken an image when you hover over it. I'm wondering how to make other images surrounding the image your cursor is over darken.</p>
  
  <p>Here is an example: <a href="http://www.b-reel.com/" rel="nofollow">http://www.b-reel.com/</a></p>
  
  <p>When you hover over the big category images, the surrounding images darken, but the hovered image remains the same.</p>
  
  <p>Any input would be appreciated. Thank you!</p>