CSS-How do you reference an image on the user's computer?

Question

I am working on a website which I don't own, but I was asked to change the .PNG file for the footer. I have made the changes on the .PNG, and was wondering if there was a way that I could view the source in my browser and change the url(images/image.png) to reference my version.

Answer 1

The only way I can think of would be to host your image online (think imageshack.us or something similiar) and then use the Firefox plug in called Firebug to change the CSS file to look at the online hosted image instead of the one it is originally looking at.