install/mod_pagespeed_test/embed_config.html

<link rel=stylesheet
      href="http://embed-config-resources.example.com/styles/rewrite_css_images.css" />
<img src="http://embed-config-resources.example.com/images/Puzzle.jpg"
     width="256" height="192"
     title="Image tweaks for this subdirectory will be in URL."/>
<script src="http://embed-config-resources.example.com/rewrite_javascript.js"></script>