* No plugins like Flash or Java required.
* Popup blockers are no problem. The images expand within the active browser window.
* Single click. After expanding the image, the user can scroll further down or leave the page without restoring the image.
* The approach uses two separate images. No heavy full-size image packed into thumbnail display size! The full-size image is loaded in the background either on page load or when the user clicks the thumb. You specify this option in the script's settings.
This is actually quite slick....