Use "Previous" and "Next" buttons as comes naturally, or enter a date and hit "Go to date".
First Garfield strip, by the way, was June 19, 1978. You can also reload without GET data to go back to today's strip.
Be forewarned: this is strictly GIGO (garbage in, garbage out).
Copyright and -left:
Garfield® light v0.3 by Senseless Software.
This PHP script is in the Public Domain. (Garfield® of course is not.)
Download Zip file from this server.
Rename, modify, and install it in any way you wish, but don't come complaining.
That said, you're most certainly welcome to write me.
Garfield® is property of Paws, Inc., and Jim Davis, not mine. Unfortunately. ;-)
Visit the Garfield and Friends Official Site.