Scripts on the site

I was pointed to a handy script here but it has a copyright in it yet there is a download button. It would seem there's a policy against something like that but I wasn't required to accept any terms. I'd like to use it at my company but they would have issue with a straight copy. So, I'll probably rewrite it using it as a guide (sort-of reverse engineering) but it seems like this would be a prudent thing to cover