Can Imageready Do This?

I've seen websites where each time you go to the home page, the photo changes. A couple examples include www.sxc.hu and www.istockphoto.com. Is this something I could do with Imageready? If it is, how? I know how to do simple animation in Imageready, but that's about it.

Thanks!

That's actually a javascript, it has to be done in an html editor.

http://javascript.internet.com/miscellaneous/random-image.html

Those are actually done with server-side scripts, using PHP or ASP or PERL, etc. Though you can do it with Javascript as well. It just takes a lot more code to do it with Javascript, plus the browser has to download all of that code then, execute it, then download the images. Whereas with a server-side script, no additional code is downloaded to the browser, and there is no delay between downloading and processing the code, and downloading/displaying the image.

Thanks you two. You've been very helpful.