title: Convert an image to grayscale in HTML/CSS
body: <p>Is there a simple way to display a color bitmap in grayscale with just <code>HTML/CSS</code>?</p>
  
  <p>It doesn't need to be IE-compatible (and I imagine it won't be) -- if it works in FF3 and/or Sf3, that's good enough for me.</p>
  
  <p>I know I can do it with both <code>SVG</code> and Canvas, but that seems like a lot of work right now.  </p>
  
  <p>Is there a truly lazy person's way to do this?</p>