Javascript Carousel (no jquery)

I want a carousel similar to this one: [login to view URL] but with no jQuery dependency. It can be straight javascript or use YUI framework. Basically it needs to have the same look and feel (display 5 pics), be keyboard accessible (you can navigate with arrows), you can click on one of the pics in the back to bring it to the front and once at the front you can click on the href of the image to open the link. It should be circular and loop back to pic 1 at the end. There is a carousel YUI plugin that almost meets my needs so if you want to customize it to match these requirements that would work. Else straight javascript it fine too but again no jQuery. Thanks for the interest,