<!doctype html>
<html class="a A">
 <head>
  <title>document.getElementsByClassName(): case sensitive</title>
  <script src="resources/common.js"></script>
 </head>
 <body class="a a">
  <p id="r">FAIL (script did not run)</p>
  <script> t(document.getElementsByClassName("A a"), [document.documentElement]) </script>
 </body>
</html>