|  | <?xml version="1.0" encoding="UTF-8"?> | 
|  | <html xmlns="http://www.w3.org/1999/xhtml"> | 
|  | <head> | 
|  | <title>previousElementSibling</title> | 
|  | <script src="/resources/testharness.js"></script> | 
|  | <script src="/resources/testharnessreport.js"></script> | 
|  | </head> | 
|  | <body> | 
|  | <h1>Test of previousElementSibling</h1> | 
|  | <div id="log"></div> | 
|  | <p id="parentEl">The result of <span id="first_element_child">this test</span> is | 
|  | <span id="middle_element_child" style="font-weight:bold;">unknown.</span> | 
|  |  | 
|  |  | 
|  |  | 
|  | <span id="last_element_child" style="display:none;">fnord</span> </p> | 
|  | <script><![CDATA[ | 
|  | test(function() { | 
|  | var parentEl = document.getElementById("parentEl"); | 
|  | var lec = document.getElementById("last_element_child"); | 
|  | var pes = lec.previousElementSibling; | 
|  | assert_true(!!pes) | 
|  | assert_equals(pes.nodeType, 1) | 
|  | assert_equals(pes.getAttribute("id"), "middle_element_child") | 
|  | }) | 
|  | ]]></script> | 
|  | </body> | 
|  | </html> |