This line graph is done completely using DHTML and CSS! Unlike an applet based solution, this loads fast and blends in with the rest of the page. You can even use a transparent background for it!
This package is free software. It is distributed under GPL - legalese removed, it means that you can use this for any purpose, but cannot charge for this software. Any enhancements you make to this piece of code, should be made available free to the general public! You should also carry a link to this page for users to download the latest version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
To print the graph, the browser should have background enabled. See this thread for a JS solution: http://www.dynamicdrive.com/forums/archive/index.php/t-8475.html
code and support library
Use View Source
for an example.