Simple Image Rotating Script or Slideshow

Hello Programmers, I am looking for a very simple script that can be installed on my websites. All of the websites use the same script, so this would make it easier for multiple installs. I need the script to display random images on the homepage of the site. The script should be controlled from the admin panel. The script should just rotate images on the homepage. This could either be a timed rotation, a new image per each new page load, an image per day, or image per unique ip address. I am open to all possibilities. If you have a script that offers multiple options that would be great! ***Please provide a demo of the image rotation script you have so I can test it out.*** Would like to find a great script and get it installed ASAP! Thanks, BCBC