This tutorial will show you how to do "PHP includes", incase you didn't know about them already. "So what are these good for?", you ask. Well, if you got a static website, you might want to keep your website menu in one file. That way you don't have to edit the menu on all 1000 pages you got. This requires PHP to be installed on your server.
I'll show you how to do.
Code:
<html>
<head>
HTML header etc
<?php
// Insert this code were you want your menu
// Remember to save this file as .php otherwhise
// it won't work
// In "menu.php" you got your normal html code for
// your menu
// You may remove these commented lines
include("menu.php");
?>
Code below menu etc
</body>
</html>
This is a really simple to keep files organized and it will save alot of time. Also with this you could make 1 file for you whole header and 1 file for your whole footer, and include them on all pages!