I finished work on this enhancement this morning.
The script works as before when you drop files, folders or more than one category. In this mode it just takes all the files and produces a Juicebox web gallery.
If you drop a single category, the script creates a Juicebox gallery with a navigation, using all child categories, recursively, of the dropped category. For each category an individual set of images and thumbnails is generated, and the gallery.html file dynamically switches between them. Very neat.
As before with the web publishing script created for IMatch 3 many years ago, the idea behind the new Juicebox Web Gallery script is to allow users to customize the output. Since web technology has evolved a lot in past years, the Juicebox script works as follows:
It produces a gallery.html file which contains the HTML code and JavaScript that is used to load Juicebox, switch between galleries when the navigation is used etc. The navigation is written as a nested <ul> list, where each <ul> and <li> has a unique class (per level) and id. This makes the navigation completely customizable via CSS. Of course the HTML page itself can be customized or replaced if required.
But to change the look, colors, fonts etc. of the gallery you don't need to touch the script itself or the HTML template.
The 'look' of the gallery is entirely controlled by one (or more) cascading style sheet (CSS) file. I provide a "Default" and a "White" style sheet with the Juicebox script. The CSS file allows you to control everything, from the background color to fonts and also the look and functionality of the navigation itself. If you know a bit CSS or you want to learn something new, you can easy setup your own CSS file and produce galleries which exactly match your web presence or corporate web site.
That's about as far as I will go. I may provide some additional style sheets in future IMatch versions, when I have a good idea or many requests come in for a specific look (e.g. for deep category hierarchies, but these are not really suited for web publishing anyway).
As before you can customize the background, text and thumbnail border colors of the Juicebox in the dialog box directly, which allows for some nice contrasts between the dark or light colors available for the navigation itself. The width of the navigation can be customized to get the best result whether you want to give the image as much space as possible or you need a wider navigation to fit long category names.
These are the two styles I've created for now:

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