<html class="reftest-wait"> <head> <script> function boom() { document.getElementById("ta").style.overflow = "scroll"; setTimeout(boom2, 12); } function boom2() { document.getElementById("ta").style.overflow = ""; setTimeout(boom, 12); } function cont() { document.documentElement.removeAttribute("class"); } </script> </head> <body onload="boom(); setTimeout(cont, 800);"> <textarea id="ta">x</textarea> </body> </html>