No-Cache an Image ?

[Brujah]

I have a page that links an image I'm generating. I want it to update the image every time it's updated, but the browser is caching the image. I do want to cache the 50 to 100 other images that make up the design, but I want this 1 specific image to be renewed and it's cache expired or whatever. Is there a way I can force it per-image ?

[bringer]

bah, nevermind

[rowan]

Append "?" or "?<random_number>" to the img URL, most browsers will not cache that.

[bringer]

http://www.simtec.ltd.uk/httpgallery/caching/