I put the script in the <head> section under the 2010 weaver options : advanced options. Changed the source of the thumbnailviewer2.js to the correct location. and changed the location of image file in the thumbnailviewer2.js file.
I have the thumbnail images set up and they link to the full size image only problem is the images open in a new page. Seems like the script is not doing anything. Any help? Thanks a bunch.