I have now completed the extension model for the attachment viewer and will hopefully be posting a new update to OpenNTF by end of week.  I had several people request ZIP file support so I went ahead and added it since Java comes with some pretty good API’s for ZIP files.  I used some basic HTML and created an index of the ZIP file contents with anchors to the actual zip entries.  The concept is the ZIP file would just act like a multiple selection but with an anchor index.  Check out the video where I show how it looks and works.

/files/ATViewer-ZipFileSupport.swf