='content' rows='10' cols='80' onkeydown=gbcount(this.form.GuestContent,this.form.total,this.form.used,this.form.remain); onkeyup=gbcount(this.form.GuestContent,this.form.total,this.form.used,this.form.remain);>＜/textarea>
最多字数：＜INPUT disabled maxLength=4 name=total size=3 value=20>
已用字数：＜INPUT disabled maxLength=4 name=used size=3 value=0>
剩余字数：＜INPUT disabled maxLength=4 name=remain size=3>
＜/form>