Hello all..
When I first Started, Web Design, I would use Frontpage (yea I know..) anyway,I would get my basic site structure together, then I would Hit all of the "Toy Stores" for tweeks and eye candy. Here are a Few

http://www.scriptarchive.com/
http://www.dynamicdrive.com/
http://javascriptkit.com/

Hope This Helps

Cheers