Vignetting effect with CSS3 radial gradient

Original image :

a kiwi !

With background image :

radial-gradient(center, transparent 30%, #000),
url(img.jpg)

Other effect :

radial-gradient(center, transparent 80%, #000 81%),
url(img.jpg)

Other other effect :

radial-gradient(center, transparent 80%, #fff 81%),
url(img.jpg)

Using css3 radial-gradients and multiple background. OK on Firefox 3.6, Chrome 10 (Windows only ?), Opera 11.11 (Windows only ?).

Does not work on IE6/IE9 nor Safari.

Author : Raphael Goetter