If this is working, you _should_ get two alerts!

Document uses file "combined.js.php" as javascript source..

Source code for "combined.js.php"

<?php
header('Content-type: text/javascript');
readfile('file1.js');
readfile('file2.js');
?>


as you can see it's using and combining two .js files, the source code for each file is below:

"file1.js"

// JavaScript Document
alert("Hello File 1");

"file2.js"

// JavaScript Document
alert("Hello File 2");

This file is calling only one file in the header
<script language="javascript" src="combined.js.php"></script>

That's about it!