jQuery: change icon to greyscale

I made a button widget in jQuery which displays an icon.

Now when I set the button do disabled, I'd like to have it greyed-开发者_开发问答out.

Is there a jQuery function to do this?

Thanks

If you don't want to create another version of the image then you can try using CSS to reduce the opacity of the button so it appears faded, or overlay a semi-transparent grey DIV to give a greyed-out effect.

http://www.alistapart.com/articles/sprites2/

Sprites are your answer.