[Plugin: Effects for NextGEN Gallery] How to resize when using lightbox?

How to resize when using lightbox?

I know lots of admin here is using the excellent Highslide effect.

But I’m still prefer lightbox. And here it comes the problem, when pic is too big, what you can see is the middle part.
Since highslide has an option to adjust the preview size, is there a one inside lightbox, or someone can contribute some code for this?

Thanks a lot.

https://www.ads-software.com/extend/plugins/effects-for-nextgen-gallery/