One could just make the arrows links that load in a hidden iframe and add CSS styling that hides the image when it's been clicked. It's not strictly correct (si

One could just make the arrows links that load in a hidden iframe and add CSS styling that hides the image when it's been clicked. It's not strictly correct (side effect for GET requests), but that's what happens as a fallback anyhow (you get links with JS disabled, you just have to open them in a new tab to avoid the reload).