Is it possible to set the equivalent of a src attribute of an img tag in CSS?

Question

Is it possible to set the src attribute value in CSS? At present, what I am doing is:

Answer 1

Here is a very good solution -> http://css-tricks.com/replace-the-image-in-an-img-with-css/

Pro(s) and Con(s):
(+) works with vector image that have relative width/height (a thing that RobAu's answer does not handle)
(+) is cross browser (works also for IE8+)
(+) it only uses CSS. So no need to modify the img src (or if you do not have access/do not want to change the already existing img src attribute).
(-) sorry, it does use the background css attribute :)