var str = '<div id="allcomment">
<br />
<div><span id="textchange" class="redbtn">文字回答</span>&nbsp;&nbsp;<span  id="audiochange" class="graybtn">语音回答</span></div>
<div class="show"  id="textcomment" >
<div class="comment">
<form  method="post" name="form2" id="form2" enctype="multipart/form-data">
<lable  id="error"></lable>
<div><textarea name="info" id="info"  required="true"></textarea><br />
<b>上传图片描述:</b><input type="file" name="imgpath" id="imgpath" accept = "image/jpg,image/jpeg,image/png"  /><br />
<input type="hidden" name="question_id" id="question_id" value="8" /></div><div><label for="user">Nickname</label><lable><a href="/post/login.php">Login</a></lable><br /><input type="text" name="user" id="user" size="22" required="true" class="input" />
</div>
<div><label for="auth_code">Security code:(<a href="javascript:" id="change_auth_code">Refresh</a>)</label><lable id="auth_code_info"></label></div>
<div><input type="text" name="auth_code" id="auth_code" required="true" value="" class="input" /></div>
<div  id="auth_code_img" class="auth_code" ></div>
<div><input name="submit" type="submit"  class="submit" value="Submit" /></div>
</form>
</div>	</div><div id="audiocomment" class="hidden"><audio controls autoplay style="display:none"></audio>  
            <input type="button" value="开始录音" class="greenbtn" id="startRecording"/>  
            <input type="button" class="stopbtn" value="停止录音" id="stopRecord"/>
            <input type="button" class="playbtn" value="播放录音" id="playRecord"/>  
              <input type="button" value="上传录音" class="submit" id="uploadRecord"/>  
              
              <input type="hidden" value="0" name="timeshow" id="timeshow" />
            <input type="hidden" name="question_id" id="question_id" value="8" /></div>
 </div>';
document.getElementById("postcommment").innerHTML = str;