[Plugin: Lightbox Gallery] Any advanced options for sizes

Hi all,

I’m using the lightbox gallery to create a kind of portfolio section on my website see http://martinbrunt.co.uk/portfolio/

However, when I set the options in lightbox to set the lightbox size I only get “small medium large full” – none of which really do what I want. Currently its set to medium but thats too big for some screens and therefore goes offscreen when you view the image.

What I’m wondering is if theres a way to make the lightbox popup window only fill the screen, or say 80% of the screen etc?

Many thanks
Martin