I looked here: http://drupal.org/node/1630630 but this is only for Drupal sites. Does anybody know how to tweak the regular lightbox2 library to make it responsive and display on small mobile screen?
by "responsive" I mean that the picture should display depending on screen size. Right now, it has always the same size and on small screens needs scrolling.
You should just be able to set max-width:100% on the image (using CSS). This is all that's required to make an image responsive. If lightbox2 sets styles on the image, just look at the selector specificity and override it