How to include JS file in one line

I have about 10 JS file
to include them i use right now

<script type="text/javascript" src="script.js"></script>

HTML:

and so on for each other, but that makes huge list and i don't like it

Is there a way to include all file in one line of code
ie:

<script type="text/javascript" src="http://site.com/folder/script|jquery|prototype|extjs"></script>

HTML:

Digg have done that way

<script src="http://cotnet.diggstatic.com/js/loader/370/JS_Libraries,jquery|Class|analytics|lightbox|label|jquery-dom|jquery-cookie" type="text/javascript"></script>

HTML:

 

You can use a php page to do it but I cant think of any way to do it in javascript.
if you convert it to php page you can create a separate files with the list of javascripts and then include them in a php page like this
<?php include 'javascripts.php'; ?>
the javascript.php will be