php/mysql/jquery/javascript slideshow

i need a rotating image gallery built upon this script: [login to view URL] the modifications that i will be needing are fairly simple, or so i have been told. here's what i need done: the current script rotates through images in an array, that are stored in a folder. What i need it to do is loop through an array for one hour, then switch to another folder and loop through that array for an hour, and be able to repeat this process. basically, I need one ten image slideshow to loop for an hour, then at the end of the hour switch to the next folder. I would prefer to have this project completed as simply as possible, as there will be modifications to it later as the project progresses. That being said, if you believe it will be easier to use a series of folders, versus a php/mysql app, it really doesnt make any difference, as this will be a demo for an investor. I am really interested in getting an admin panel, with which i can add images and descriptions into a form versus having to edit the code manually, and for this im sure a database would be ideal. i would love to see this done in cakephp, simply because i am learning it myself, and it would be nice to learn from this project. if you are a creative programmer, and have a better solution for what i'm needing, i am open for suggestions! thanks