To be quite honest, I do not believe for a second that this script has a future! JpegSplorer for InDesign is nothing but an attempt to push ScriptUI to its utmost limits...
The script is supposed to browse the valid JPEG links of the active document. It opens a dialog with a navigation system based on scrollable thumbnails and a preview area.
Note. — In ScriptUI, scrollbars and image management are two well-known puzzles for designers. Not to mention that the same features would be very easily implemented in Flex!
JpegSplorer sounds to work somewhat on Windows and Mac platforms... Try it and tell me!
Note. — Loic Aigon reported a bug with the original version on Mac OS. It should be fixed now (v. 1.02)