I am looking to allow users to select a pre-uploaded image to a user generated web page.

I have a list of the available images, so I could easily do this with a select control, however, I'd really like to allow the users to select from a pop up of thumbnails, rather than text, then have that populate a text form element with the resulting file name. I'm hoping the end result will be like a calendar pop-up date selector.

I'm sure there is a simple way to do this using Jquery / other javascript. Does anyone know of a pre built widget / example of this, or can people point me in the right direction of where to start? I'm pretty new to Javascript, but willing to invest some time in learning...

Clarification: A grid or list of thumbnails is what I'm after ideally, but the main thing is to give the user a visual representation of the picture, rather than it's filename...