<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>Control test</title> <link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu"> <link rel="reviewer" title="Ian Hickson" href="mailto:ian@hixie.ch"> <link rel="help" href="http://www.w3.org/TR/CSS21/selector.html"> <style type="text/css" id="test"> p { color: red; } </style> </head> <body> <p>This text should be green.</p> <script type="text/javascript"> document.getElementsByTagName("head")[0].removeChild(document.getElementById("test")); var style = document.createElement("style"); var text = document.createTextNode("body { color: green; }"); style.appendChild(text); document.getElementsByTagName("head")[0].appendChild(style); </script> </body> </html>