jquery.bgiframe.js在IE9下提示INVALID_CHARACTER_ERR错误

SCRIpt5022: DOM Exception: INVALID_charACTER_ERR (5)
jQuery.bgiframe.js, 行8 字符976

1 {if(!$('iframe.bgiframe',this)[0])this.insertBefore(document.createElement(html),this.firstChild);});};})(jquery);

this.insertBefore(document.createElement('HTML'),this.firstChild);