<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>CSS Test: Effect of DOM mutations on :hover matching</title> <link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu"> <link rel="help" href="http://www.w3.org/TR/CSS21/selector.html#dynamic-pseudo-classes"> <meta name="flags" content="dom interact"> <script type="text/javascript"> function remove() { var node = document.getElementById("target"); node.parentNode.removeChild(node); } </script> <style> div:hover { color: red; } div#green { color: green; } </style> </head> <body> <div> Dummy text. Dummy text. <div id="target" onmouseover="setTimeout(remove, 1000)"><span>Hover this text, then wait till it disappears. At that point there should be no red.</span> </div> </div> <div id="green"> Dummy text. Dummy text. </div> </body> </html>