<!DOCTYPE html> <html class="reftest-wait"> <!-- Test: Add the required attribute to an element to make it required. --> <link rel='stylesheet' type='text/css' href='css-optional-style.css'> <script type="text/javascript"> function addRequired() { document.getElementById('i').required = true; } function disableReftestWait() { document.documentElement.className = ''; } </script> <body onload="addRequired(); disableReftestWait();"> <input id="i"> </body> </html>