Is there a simple way to display a color bitmap in grayscale with just HTML/CSS?
HTML/CSS
It doesn\'t need to be IE-compatible (and I imagine it won\'t be) -- if
If you are able to use JavaScript, then this script may be what you are looking for. It works cross browser and is working fine for me so far. You can't use it with images loaded from a different domain.
http://james.padolsey.com/demos/grayscale/