SITE: alistapart.com

In this article, we’ll build a simple, template-driven site that separates style, content, and structure in your website. We’ll create a cross-browser stylesheet switcher that remembers the user’s preferences, touching on php variables, cookies, if statements, and including pages with require_once.

You?ve seen them before: links that say 'click here for printer-friendly version' or words to that effect. Every time you follow one of those links, you load a separate document that presents exactly the same information with a different layout, and probably different markup.