I don't have flash on my machines. More than a mere security and convenience measure, it is one of those things enforced by Adobe themselves - by refusing to ship an EM64T/AMD64 build of its mozilla plugins. So when the flickr organizr went Javascript I was happy. But they took away a bit of code which made it really easy to rotate images - because you couldn't do it in Javascript.
But you can. I don't mean with some memory hogging clientside bit twiddling but with the now popular HTML 5 Canvas. So, with a few lines of Greasemonkey code, which you can pull from here, I can now push in image rotate previews back into flickr's organizr. The code has to be run outside greasemonkey land to get full access to the dom data, which I accomplish with the following script insertion.
var _s = document.createElement("script");
_s.appendChild(document.createTextNode(window.myFun.toSource() + "();"));
document.body.appendChild(_s);
And just in case you happen to be an IE user, you might want to see if EXCanvas can make my canvas code work decently there.
--enhance, v.:
To tamper with an image, usually to its detriment