Hopefully the following notes will help.

If you want the images in your gallery to be displayed in full (without cropping), set imageScaleMode to either SCALE_DOWN or SCALE (in JuiceboxBuilder-Pro's 'Customize -> Main Image' section).

Please take a look at the Using a Resizable Gallery with a Header support section. The View Resizable Gallery with Top Menu Example has a header of fixed height and the gallery takes up the remainder of the user's browser window. You can view the source of the web page in a browser and copy/modify the code to suit your own needs (by swapping the sample header content for your own navigation menu).
It might not be exactly what you want but if you want to overlay a transparent navigation menu on top of a Juicebox gallery, then knowledge of HTML, CSS (and perhaps JavaScript) would be required. It would not be something that could be implemented within Juicebox itself.
You could, however, embed links into the Gallery Title or Back Button as noted in these FAQs:
How do I add HTML formatting to the Gallery Title or Back Button?

If you want a Juicebox gallery to start an automated slideshow as soon as it loads, set enableAutoPlay="TRUE" and autoPlayOnLoad="TRUE" ('Customize -> AutoPlay'). You may also want to set enableLooping="TRUE" ('Customize -> General').

Use the following settings:

buttonBarPosition="NONE"
galleryTitlePosition="NONE"
backButtonPosition="NONE"
showImageNav="FALSE"
captionPosition="NONE"

Use the following settings:

showThumbsOnLoad="FALSE"
showSmallThumbsOnLoad="FALSE"
showThumbsButton="FALSE"
showSmallThumbsButton="FALSE"

Make sure that your gallery's dimensions match the aspect ratio of your images (so that there is no wasted space around your images within the gallery).

I'm not entirely sure what you mean by this. You can set captionPosition="OVERAY_IMAGE" so that the image titles and captions appear on the image overlay (on top the the main image). However, the text will appear towards the bottom of the image, not the side.

If you want a gallery to completely fill a users browser window, make sure that it is the only element on your web page and set its dimensions to 100% x 100%.

You can insert links into image captions by using HTML formatting as documented in this FAQ:
How do I add HTML formatting to image captions and titles?

For example, you could enter a caption such as the following into JuiceboxBuilder-Pro.

<a href="http://www.example.com/index.html">Link text goes here</a>

It may not be ideal to use image captions as navigation for your site (it depends on your site).
You may have better luck following one of the resizable templates here (placing your navigation menu in the header).

Hi,

so, juicebox pro is now installed.

and now i have additional questions ;)

- is it possible to let the url static (don´t chance if i click on a link in the caption)?
- i´d like to position the caption 10% of height below from top of picture, but how?
- is it possible to see continous the caption bar? load picture let the caption short vanish...

Many thanks and best regards,
sbird

Hi Steven,

thanks for your reply.

it works now with deinstallation and installation the never version.

i mean the url showing in the browers adress like "http://juicebox.net/forum/viewtopic.php?pid=5575#p5575".
i would like to follow a link and the url stays at "http://juicebox.net/forum/viewtopic.php?pid=5575#p5575"...

with the caption i thought i can do a nav bar but i think it´s limitating, so i make it with css / html.

Many thanks and best regards,
sbird

A browser will usually display the URL of the page currently being displayed.
It is not possible within Juicebox to prevent a browser from displaying the URL of page which has been linked to.
For more information on the topic, please try a web search with terms such as 'URL masking' and 'link cloaking'.

If you want your navigation menu to appear and disappear when the user hovers over the container, then you will need to implement either a CSS solution (such as on this web page) or a JavaScript/jQuery solution (such as on this web page).

In order for your links to be active, your navigation menu needs to be stacked on top of the gallery by assigning it a large z-index value.

For a solution to both problems, try using the following CSS on your web page (in addition to your own CSS from your post above):

#wrap {
    position: fixed;
    top: 7%;
    width: 100%;
    height: 7%;
}
#wrap, #navigation, #navigation a {
    z-index: 9999;
}
#navigation {
    display: none;
}
#wrap:hover #navigation {
    display: block;
}

... and then use HTML code such as the following for your navigation menu:

<div id="wrap">
    <div id="navigation" >
        <a href="../home/index.html" >|   home</a>
        <a href="../wedding/index.html" >|   wedding</a>
    </div>
</div>