Is it possible to call a JavaScript function from the IMG SRC tag to get an image url?
Like this:
you could dynamically feed the image by calling an aspx page in the SRC.
Ex;
On the page side, you`ll need to put the image in the response and change the content type for an image.
The only "problem" is that your images won't be indexed a you better put some cache on that provider page or you'll ravage the server.