W3School TIY Editor
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<html> <head> <link rel="stylesheet" type="text/css" id="style1" href="/example/hdom/try_dom_link.css" /> <script type="text/javascript"> function disableStyle() { document.getElementById("style1").disabled=true } </script> </head> <body> <form> <input type="button" onclick="disableStyle()" value="Disable style sheet" /> </form> </body> </html>