Including header file using HTML

Is it possible to include a header and footer file using HTML? I have my file as a .html and need to be able to include the HTML for the header and footer. Anyone know how I can do this?

Not with HTML. You can include a <SCRIPT> file, and output the HTML using javascript. That will do what you need, but the only downside is that it requires javascript on the browser.

The other option is to use some server-side scripting language (ASP or PHP would be perfect for this), and they will allow you to do exactly what you want.

Or, you could rely on software (such as dreamweaver) to maintain a template for you, and actually modify all the .html files in a folder if you decide to modify the template file.