@marcelbuechel

I understand your request for JuiceboxBuilder to accept images with filenames that contain special characters but the image filenames become part of URLs when they are uploaded to a web server and it would be wise to use only web-safe characters in filenames for this reason. Please see section 2.3 of this document for details.

JuiceboxBuilder currently handles all images whose filenames use any or all of these characters.

When expanding a Juicebox-Lite gallery, the main image used in the expanded gallery is exactly the same one that is used in the normal (unexpanded) gallery - the image defined by the imageURL in the gallery's XML file.
Also, in Juicebox-Lite, the imageScaleMode configuration option is set its default value of SCALE_DOWN. This will dynamically scale down large images to fit within the gallery's image area but will not scale up smaller images.
Therefore, the images in your gallery should be large enough to fill the image area in the expanded gallery. In the normal (unexpanded) gallery, Juicebox will just shrink them down a bit to fit (your images will not be cropped).

If you were to purchase Juicebox-Pro, you would be able to change the value of imageScaleMode to SCALE_DOWN, SCALE, FILL, STRETCH or NONE. Descriptions of these values can be found in the Main Image section of the Config Options page.
Also, with Juicebox-Pro, you would be able to have a Multi-Size Image gallery whereby you would be able to have three different image sizes in your gallery and Juicebox would determine the best image size to be displayed depending on the device, browser window size and whether or not the gallery is expanded. For example, in Large Screen Mode, 'medium' images would be used in the normal (unexpanded) gallery and 'large' images would be used in the expanded gallery. (You can choose the dimensions for all three image sizes in JuiceboxBuilder-Pro.) For more information about Multi-Size Image Support, please see this blog entry.

The Lite Embedded demo gallery's 'config.xml' file can be found here (although the information above may be more useful):
http://www.juicebox.net/demos/lite/full/config.xml

The maxThumbRows and maxThumbColumns configuration options are used only in Large Screen Mode when the thumbnails and main images are displayed on the same page. In Small Screen Mode, the number of thumbnails displayed is determined by the size of the browser window and the thumbnails themselves.

Whether you expand the original gallery when a thumbnail is clicked or use a click handler on the thumbnails to load a new gallery displaying the selected image, you will still have the problem of the original gallery changing from the thumbnail page to a main image page. (It sounds like you want the thumbnails to act as links and to always be displayed as thumbnails on your main web page). Unfortunately, Juicebox was not designed to allow thumbnails to be used as links.

It sounds like one possible solution might be to create your own thumbnail links on your web page and link directly to corresponding images in a gallery by setting enableDirectLinks="TRUE" ('Customize -> General') and using URLs such as: http://www.example.com/gallery/#2 (for example, to display the 2nd image in the gallery).

By default, a Splash Page is displayed when a gallery is embedded at less than 100% x 100% and displayed in Small Screen Mode.
The Splash Page is not displayed in the iframe gallery as the gallery is actually embedded (at 100% x 100%) into the HTML page being loaded into the iframe.
If you use the standard embedding code and do not want to use a Splash Page, then you can set showSplashPage="NEVER" (in JuiceboxBuilder-Pro's 'Customize -> Splash Page' section).

If using local images, you can set the dimensions of your gallery's thumbnails by clicking the 'Change Sizes...' button on the 'Images' tab. New thumbnails will be generated at the specified dimensions and the thumbWidth and thumbHeight configuration options will be set accordingly. For a Flickr gallery, just open your gallery's 'config.xml' file in a plain text editor and add entries such as thumbWidth="100" and thumbHeight="80" to the opening <juiceboxgallery> tag.

A Juicebox gallery's dimensions do not change when clicking on a thumbnail image and it is not possible to treat the thumbnail page in Small Screen Mode like a Splash page (expanding the gallery on a thumbnail click).
It might be possible to achieve this (using the Juicebox-Pro API, CSS and JavaScript) but you may run into complications with the normal hide/show thumbnails and expand/close gallery functionality. You might need to use some variables to keep track of the expanded state of the gallery and the visibility of the thumbnails to avoid unnecessarily closing the gallery (via the toggleExpand() method) when a user clicks on a thumbnail whilst in expanded mode. It might become very complicated very quickly.
Perhaps the best option would be to disable the Splash Page (if you do not want to use it) and display the Expand Button (by setting showExpandButton="TRUE" in JuiceboxBuilder-Pro's 'Customize -> Lite' section) so that users can expand the gallery fullscreen by clicking the button. (Please note that the Expand Button is disabled when using an iframe. This is noted in Option #2 here.)

On the 'Images' tab of JuiceboxBuilder-Pro, you can drag and drop thumbnails into a new order.
You can also use Ctrl+Click to highlight a selection of images or Shift+Click to highlight a block of images and then drag and drop the highlighted images into a new order.

You can also sort the images using the 'Images -> Sort' option from the drop-down menu at the top.
Possible values to choose from are 'By File Name', 'By File Date' and 'Reverse'.

Yes. Just edit the first post in the thread and type "[SOLVED]" at the end of the 'Topic subject'.

If you want to allow a user to start and stop an automated slideshow, set showAutoPlayButton="TRUE" (in JuiceboxBuilder-Pro's 'Customize -> Button Bar' section) and the AutoPlay button will be displayed in the gallery's Button Bar.

If you want the slide show to start as soon as the gallery is loaded, set autoPlayOnLoad="TRUE" ('Customize -> AutoPlay').

If you want to have the images loop (instead of the slide show stopping at the last image), set enableLooping="TRUE" ('Customize -> General').

You can change the image transition type and image transition time using the imageTransitionType and imageTransitionTime configuration options ('Customize -> Main Image').

Other AutoPlay options (such as displayTime) can be found in the 'Customize -> AutoPlay' section.
Please see here for a list of AutoPlay options.

In order to investigate further, I will need some more information. Please post the URL to your WordPress website so that I can take a look.
It would also help if I had access to your WordPress installation and web server. If you are willing to allow me access, please let me know and I will send you an email so that you can provide me with your login details. Thank you.

As all your image titles are just a single line of text, it might be easier to just increase the maxCaptionHeight so that the text is vertically centered within the caption area.

Otherwise, to vertically center an image title using CSS, you could try something like the following:

.jb-cap-content.jb-caption-title  { 
    position: relative;
    top: 50%;
    transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    -webkit-transform: translateY(-50%);
}

@come_paglia

It looks like the following should work on your web page:

#nav li.menu-item  { 
    z-index: 9999;
}

On further investigation, the problem was not in finding a suitable CSS selector to attach the click handler to (the correct class is .jb-idx-thumb) but the fact that the class does not exist in the Document Object Model immediately after the Juicebox-Pro API event onInitCompete is fired (when the gallery should be complete and ready). The trick is to delay the setting up of the click handler (until such time as the .jb-idx-thumb class exists in the DOM) by using setTimeout.
Try the following which will open the current image's corresponding linkURL when either a thumbnail or main image is clicked.

<script>
    var jb = new juicebox({
        changeImageOnHover: 'TRUE',
        containerId: 'juicebox-container',
        imageClickMode: 'OPEN_URL'
    });
    jb.onInitComplete = function() {
        setTimeout(function() {
            $('.jb-idx-thumb').click(function() {
                var index = jb.getImageIndex();
                var info = jb.getImageInfo(index);
                var url = info.linkURL;
                window.location.href = url;
            });
        }, 500);
    };
</script>
<div id="juicebox-container"></div>

I have logged a bug report with the developers (regarding the fact that the gallery is not complete and ready immediately after onInitComplete is fired) and it should hopefully be fixed in a future version but the code above should work fine in the meantime.

The following demo gallery layouts are included as presets in the current version of JuiceboxBuilder-Pro: Colors, Embedded, Full, Hong Kong, Sharing, Simple, Slider, Top Left. (They can be selected from the 'Load Preset' drop down menu on the 'Customize' tab).

The XML files for galleries can usually be found manually by adding 'config.xml' to the demo gallery's URL.
For example, the 'Flat' demo gallery can be found here: http://www.juicebox.net/demos/pro/flat/
The 'Flat' demo gallery's XML file can be found here: http://www.juicebox.net/demos/pro/flat/config.xml

If you save the 'Flat' demo gallery's XML file to your hard drive, then you can open it as a preset via the 'Presets -> Load Preset...' option from the drop-down menu at the top of JuiceboxBuilder-Pro.