设置<textarea>文本框中的内容为只读不可修改状态，只需要加入disabled或readonly即可
<textarea name="qualification"id="qualification" cols="29" rows="3" οnblur="textOnBlur();"disabled></textarea>
<textarea name="qualification"id="qualification" cols="29" rows="3" οnblur="textOnBlur();"readonly></textarea>
