That's great, thanks.
I decided to use php and just add .svg to the list of files it parses.
Since then I have realised I can use javascript to add elements too, and I think this would be more appropriate because its client side.

Bugger IE, i'm going to carry on thinking svg is as awesome as it is.

I'd like my svg graphic to contain a row of embedded images taken randomly from a list of urls. How do you recommend I would go about accomplishing this? Initially I thought I would use javascript (which I'm not that familiar with) but now that I am looking at it... it may be more suitable for anima...