點擊回車提交

    <Script Language="javascript">
    function document.onkeydown(){
    if(window.event.keyCode==13 && window.event){
    document.forms.item('表單名稱').submit();
    }
    }
    </Script>
    <form id="表單名稱" action="aa.asp">
    <textarea> </text_area><input name="submit" type="submit" value="提交" />
    </form>