The Juicebox plugin for Lightroom automatically sets the gallery's width and height both to 100% (to display the gallery on a page of its own, filling the page) and it is not possible to change these values in the interface.
If you want a gallery with different dimensions, then you will likely be embedding the gallery in an existing web page alongside other content and should follow the embedding instructions
I don't know what I want - this was simply the code I copied from JB - in the hope that it would give me in Lightroom the gallery I had created in standalone JB
Also, the background color and opacity can be set in the interface (in the 'Color Palette' section) without the need to enter the values manually in the 'Pro Options' text area.
Other options should be entered into the text area in the form
But I'm not a coder!! - how do I know what I need to put into the Lightroom box? - I just can't do it!! Why do you think I bought JB.....?!
Please post the URL to your gallery so that I can take a look for myself and determine the cause of your problem.
In the meantime, perhaps the troubleshooting
URL is: janesharp.com/galleries/Sarah_Lamond_JB I noticed that JB did not create a index.html file - is that why?
Also, you should be more upfront about the lack of ftp - whilst you can build galleries you can't actually publish them.
Thanks for your prompt replies, hope you can help.