jCarousel for WordPress implements the jCarousel as a WordPress plugin. It also displays a larger image size of the clicked item in the scroller or th
Simple attach the images you wish to appear in the carousel to the page or post where you will place the shortcode [jcarousel_gallery].
You can use CSS to change the look and feel of the layout. You can also create custom images for the next and prev arrows.
Carousel Gallery uses the WordPress Media settings for this (Settings -> Media).