JAK lightbox. How to change to (increase) z-index?

[websiter]

JAK lightbox. How to change to (increase) z-index?
I use in PhocaGallery JAK Lightbox. At opening some modules overlap Lightbox.
FireBug has found
<div class="window-container" style="position: fixed; z-index: 10; top: -63px; left: 68px;">
Has changed 10 on 100 of FireBug - it has ceased to be overlap.
Has changed 10 on 100 in files, here:
\components\com_phocagallery\assets\js\jak\window_compressed.js the Line 45.
\administrator\components\com_phocagallery\front\assets\js\jak\window_compressed.js the Line 45.
Has not helped, are overlap, and FireBug shows 10 though has specified 100.
Where correctly to specify?
Thanks.

[Jan]

Hi, I have no experiences with JAK javascript code, try to search the js again to see if there is no other part and try to see the JAK css too (be aware, there are two different CSS - one for vertical and second for horizontal displaying of images)

Jan