[Plugin: Shortcodes Ultimate] how to modify style for jcarousel

Hi,

i would want know how modify style into jcarousel.
Actually my jcarousel is setted to display 6 photo, and with firebug i see that its width is 790px.
if i would want have same photo’s number but with a width of 900px, where i must change it?

i have seen into jcarousel.css but there aren’t instruction in css file, and if i add width and height i have visualization problem instead solution.

have some help for me?
thank you so much

http://ww.wp.xz.cn/extend/plugins/shortcodes-ultimate/