Don you mean Java or JavaScript?
Java requires a JVM (Java Virtual Machine) installed, and Windows XP and IE6
do not have the JVM unless the user downloads it from Sun (
www.java.com).
JavaScript in an external .js file will run on a page provided the page
links to the .js file using a link similar to
<script type="text/javascript" src="path/scriptname.js"></script>
Whether the script runs in FP03 or not is irrelevant - it has to run in the
browser used to view the page.