title: blur in raphael
body: <p><a href="https://stackoverflow.com/questions/6485115/how-to-use-svg-filters-with-raphael-js">Here</a> you already find a plug in to add blur to raphael elements</p>
  
  <p>I want to cover parts of my raphael svg with a transparent layer that blurs everything behind it. Is something like this possible with raphael?</p>