Simple image selector

Hi all,
Just needing a simple script that will allow a user to click on an image, and have a corresponding image load in a different div. There are tons of these types of scripts, but you have to select the image from a list.
Like here.
Where you can click the thumbnails, and a new image shows up )in the gallery section).
Also, if, for example, image #3 is shown, the thumbnail has that little gray dot underneath it to show which image is being shown.
If someone could point me in the right direction here, that’d be great ('cause I’m no good at Javascript).

Thanks!