The JavaScript Source is an excellent JavaScript resource with tons of "cut and paste" JavaScript examples for your Web pages.
http://javascript.internet.com/
Here you'll find the latest versions of implementation examples excerpted from all editions of Goodman's JavaScript book. Scroll down to Application Excerpts. http://www.dannyg.com/examples/index.html
"April helps provide brains and beauty to any website with functional javascript, and cool effects. Over 310free cut and paste scripts to date!"
http://www.a1javascripts.com/