This goes in the BODY tag of your document, as part of the actual BODY tag.

A Slacker's Guides to HTML, CSS, Javascript, Dynamic HTML, and all HTML documents within the slackerhtml.tripod.com domain are copyright Rob Romano, unless otherwise noted. If you have a problem with something I said, feel free to send an E-mail to our complaint department by clicking here. But I swear I didn't do it.
What I did do was collect these scripts from different "free JavaScripts" sites. I did not alter any of the actual script or associated comments. All are left intact, crediting whoever is worthy. If I dun did something wrong feel free to mail me right over here and tell me all about it.