These Javascripts are free from The Javascript Source. The following disclaimer is included in their site.

"We offer our site as a free "public service" resource. Simply stated, all the scripts on this site are free for personal or business use. The only requirement for use of archives is that you leave the credit information inside the script. We also don't think it's too much to ask if you would please link back to The JavaScript Source site to help spread the word about our site."