Fotiman - 1:42 pm on Sep 19, 2013 (gmt 0)
And since all of your previous examples have only had a single <img> tag, that's possibly one reason why you haven't gotten useful help. It wasn't until you said that you wanted to exchange two images that, for me at least, the problem was finally clear.
I agree. It was not clear that you wanted to exchange 2 images at once.
Let us know if rainborick's solution works for you.