var str = '<div id="allcomment"><br /><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="ti_id" id="ti_id" value="1" /></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>';
document.getElementById("postcommment").innerHTML = str;