We’ve been playing around with scriptaculous recently which is a javascript library or rather a set of that lets you do some pretty cool stuff on your website.  It’s as easy to use as going to the site http://script.aculo.us/ and uploading the libraries to your own site and then linking to it and calling the proper commands.  I was able to do things with a picture like make it wipe up and over to the left to dissapear and some other neat stuff.  It’s relatively easy to use so if you are at all interested in web development you should check it out.  This page here tells you all about how to use it and will get you going.