<html xmlns="http://www.w3.org/1999/xhtml" xmlns:g="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml" xmlns:t="http://tc.labs.opera.com/#test">
 <head>
  <title>document.getElementsByClassName(): "tricky" compound</title>
  <script src="resources/common.js"></script>
 </head>
 <body>
  <p id="r">FAIL (script did not run)</p>  
  <x class="a"/>
  <g:x class="a"/>
  <x t:class="a" h:class="a" g:class="a"/>
  <g:x t:class="a" h:class="a" g:class="a"/>
  <t:x class="a" t:class="a" h:class="a" g:class="a"/>
  <script>
   var collection = document.getElementsByClassName("a"),
       test = document.getElementsByTagName("x")
   t(collection, [test[0], test[1]])
  </script>
 </body>
</html>