setup block region to content, pages to node/* by default, this prevents the PHP warning when the block is not displaying under a node.
do no show the block when there's no images for the selected field.
some code clean up.
You need to download the jcarousel source code and extract it to the modules folder.
Providing a jcarousel block which can be managed throught the admin/build/block.
No need to write any HTML or including any JS. Just put the block to 'content' region, and configure it shows only at path 'node/*'. If you have pathauto alias pattern like content/type/*, you can show this block only at certain types of nodes.
