php邮件简历和其他详细信息与ajax提交和验证码

I have a form with captcha but it will not work submit in ajax mode where as it will work well in normal submit mode.

<form action="#" name="MYFORM" id="MYFORM"> 
  <label>Name</label> 
  <input name="name" size="30" type="text" id="name"> <br clear="all" /> 
  <label>Email</label> <input name="email" size="30" type="text" id="email"> <br clear="all" /> 
    <div id="wrap" align="center"> 
      <img src="get_captcha.php" alt="" id="captcha" /> 
      <br clear="all" /> 
      <input name="code" type="text" id="code"> 
    </div> 
  <img src="refresh.jpg" width="25" alt="" id="refresh" /> 
  <br clear="all" /><br clear="all" /> 
  <label>&nbsp;</label> 
  <input value="Send" type="submit" id="Send"> 
</form>