A little old-school, the Simple Popup Images shows images in their own pop-up window. None of that crazy AJAX mess.
The Simple Popup Images plugin allows you to add pop-up images to your WordPress blog. You put a thumbnail image in your post; if a user clicks on it, a larger version appears in a separate window. Want to see it in action? Check out this post.
Features that I think are cool:
- Pluginís UI makes it easy to add the image and thumbnail to your post
- Can automatically make thumbnails from a large image (requires the GD library to be installed)
- The resulting popup window can, if you like, vanish the moment the user clicks away from it
- Easy installation
Check it out at Live Granades