How to set offset according to class="active"

I have a working jcarousel that has a list of images that are links. It works as a menu that selects a node to display. There's always one link with class="active".

The question is: How to set offset so that it's in regard to that active link (it might be eg. active+3, so that image of the active node is always at the middle of carousel displaying 7 images).

Here is a kind of solution, but how could it be applied to Views carousel? (Could it be possible to make it a feature for the module - so that you can choose in views to use active as the base of the offset?) Would be really useful!