Maybe many of you wants to show all available thumbnails in carousel box. Ok, there are two simple steps:
1. Open the file your_shop/javascript\jquery\plugins\jCarousel/jCarousel.js and find:
"var divSize = liSize * v;" - row 245;
replace with:
"var divSize = liSize * itemLength;"
NB: If you want to show only exact number of thumbnails, you have to replace the itemLength variable with this number

2. Open the file your_shop/javascript/product.functions.js and find:
$("#ImageScrollPrev").show();
$("#ImageScrollNext").show();
replace with:
$("#ImageScrollPrev").hide();
$("#ImageScrollNext").hide();
with this step we hide the Next and Previous buttons
That's it.
NB: If you have many thumbnails you have to increase the size of the content windows