A Splash Page is a placeholder for the gallery: an image which, when clicked, displays the gallery itself.
This is different from the thumbnail grid displayed in Small Screen Mode.
If you always want the thumbnail grid to be displayed, set screenMode="SMALL".
If you always want the Splash Page to be displayed, set showSplashPage="ALWAYS".

In order to display a Juicebox gallery, your web page must load the 'juicebox.js' file (which, in turn, loads the 'theme.css' file and other related resources).
However, there is no way to speed this up (other than to perhaps host your images locally rather than have Juicebox fetch them from Picasa's servers). WP-Juicebox embeds a Juicebox gallery using the same method as is described in the Embedding Guide with the exception that your WordPress pages and the Juicebox XML file are created dynamically by PHP when the page and gallery are viewed. If all pages were static, things might run a little quicker (as your server would not need to create the pages on demand) but this is not how WordPress works. The advantage of having the Juicebox XML file created dynamically is that you can change your gallery's images and captions directly in Picasa without having to manually rebuild your Juicebox XML file afterwards.

On this web page: http://www.irmucha.pl/nieswiateczne.html
... it looks like the initial gallery is being displayed by the following code:

$(document).ready(function () {
    doLayout();
    $(window).bind('resize', doLayout);
    new juicebox({
        containerid : 'juicebox-container'
    });
});

... and this instance of Juicebox does not have a valid 'config.xml' file in the correct location.
Try adding the baseURL configuration option (from the embedding code further down your page) to the code above, i.e.:

$(document).ready(function () {
    doLayout();
    $(window).bind('resize', doLayout);
    new juicebox({
        containerid : 'juicebox-container',
        baseUrl : 'nieswiateczne/'
    });
});

I expect that you may not need both instances of embedding code on your page.
Once you have added the baseURL configuration option to the first instance (at the top of the page), try removing the second instance (at the bottom of the page).

With the single-site license, you can have an unlimited number of galleries on an unlimited number of pages (as many galleries per page as you like) as long as all your galleries are hosted on the same domain (and any subdomains).

There is no App (or any other method) that will allow you to create and upload a Juicebox gallery from a mobile device.
As an alternative to my Flickr suggestion, you could first set up a Juicebox gallery (on your computer) using a PHP file to read the contents of a directory and to display the images contained with that directory in your Juicebox gallery.
Please see this forum post for an example of such a PHP file.
You could then upload your images to the specified directory on your own web server using an FTP App.

Thank you for providing the URL to your gallery.
You have chosen to display the 'Info Button' in your gallery.
As noted in the description for the showInfoButton configuration option in the Button Bar Options section of the Config Options page:

You can now toggle the overlay on and off by tapping on the Info Button rather than anywhere on the screen.

@marcrmiller

Your gallery displays and functions OK in IE10 on my PC (and also in Firefox 19.0.2, Chrome 25 and Safari 5.1.7).

Please note that as you have use the www.cal500.com subdomain in the URLs within your embedding code, your gallery will display only when you access your web site using the www.cal500.com subdomain (and not when going to the main cal500.com domain).
All gallery files must be on the same domain (or subdomain) as the web page containing the embedding code due to the JavaScript same origin policy.

One solution to this would be to use relative URLs (rather than absolute URLs) in your embedding code.

Juicebox does not currently have the ability to horizontally or vertically align the main images within the image area.
We plan to introduce new configuration options to allow such positioning in the next version of Juicebox-Pro (though I do not know when it will be released).

@contactgeoff

I notice that your gallery uses Juicebox-Pro v1.1.1. Please try upgrading to the current version (v1.2.0) to see if this makes a difference.
Please see the Upgrading Juicebox page for details.

What I am saying in my post above is that both of your galleries (http://chesterfieldsbronzes.com/temp/ and http://chesterfieldsbronzes.com/temp/test2/) scale dynamically with the size of the user's browser window.
If this does not happen in your own browser, try clearing your browser's cache to ensure that it is not hanging onto and using older versions of your gallery files.

@Michal

This is only because your page uses the XHTML 1.0 Transitional Doctype Declaration.
If your page uses the HTML5 Doctype Declaration (like the sample 'index.html' page in the 'web' folder), then you would not get this error message.

The error message refers to a generic 'configuration XML file' rather than a specific file named 'config.xml'.

Your page loads the 'juicebox.js' file twice (from two different locations):

<script type="text/javascript" src="./nieswiateczne/jbcore/juicebox.js"></script>

<script src="swiateczne/jbcore/juicebox.js"></script>

Try removing one of them to see if this makes a difference.
Also, it should not make a difference but try renaming your XML files to the default 'config.xml' and then remove the configUrl option from your embedding code.

That is correct. A WP-Juicebox gallery sourced by images in the WordPress Media Library uses the Media Library's Title and Caption fields for the Juicebox titles and captions.

When you upload images, WordPress (not WP-Juicebox) attaches them to the post in a certain order and when displaying a gallery, WP-Juicebox simply asks WordPress for a list of attached images and display them in the order given.
If you wish to change the order of images in a gallery (in WordPress 3.5 or later):

• 'Edit' the post that contains the gallery

• Click the 'Add Media' button

• Go to the 'Insert Media -> Media Library ' section (which should be displayed by default)

• Select 'Uploaded to this post' from the list of options in the combobox

• Drag and drop the images into the order that you require

• Close the 'Add Media' window

If you want to embed a Juicebox gallery (which was not created by WP-Juicebox) in a WordPress page or post, then follow the baseUrl instructions here.
Essentially:
(1) Create a Juicebox gallery with the method of your choice.
(2) Upload the complete gallery folder to your web server.
(3) Paste the baseUrl embedding code into the body of your WordPress page or post (ensuring that the method of entry is 'Text' rather than 'Visual).
It does not matter where on your web server you upload your gallery folder to as long as you know where it is and that the two paths within the baseUrl embedding code (the path to the 'juicebox.js' file and the baseUrl itself) are correct.