Transparent Circle on Image

How to draw Transparent Circle on Image

[durgaprasad]

I want to allow the user to draw a transparent circle on image.(using only css and javascript)

Can anybody help me in this.

[Iguana]

I'm pretty sure this is not possible in plain Javascript. I've used 2 ways to do something similar in the past.

1. PHP image manipulation (on the server side)

2. SVG graphics - requires the user to install the Adobe SVG module (likely to be part of most browsers in the near future) and then I could use client side javascript to draw whatever I liked on an image

[benihana]

or

3: flash

cannot see away to do it purely with css and js.