<html xmlns="http://www.w3.org/1999/xhtml"> <head> <script type="text/javascript"> <![CDATA[ function boom() { var option = document.getElementsByTagName("option")[0]; var b = option.firstChild; option.appendChild(document.createTextNode("\u064A")); document.documentElement.offsetHeight; option.removeChild(b); } ]]> </script> </head> <body onload="boom();"><select><option>B </option></select></body> </html>