如何从HTML表单DOM FiELDSETS生成XML文件

Question

i want to generate XML string from HTML form  using Javascript.
****************** HTML Form ********************

<form id="demo1"><div><div name="XMLDIV" id="XMLDIV"><fieldset name="COUNTRY" id="COUNNTRY">
    <legend>COUNTRY</legend>
    <fieldset name="STATE" id="STATE">
        <legend>STATE</legend>
        <label>AP</label>
        <input type="text" value="Andhra" /><br />
        <label>KR</label><input type="text" value="Karnataka" /><br />
        <fieldset name="DISTRICT" id="DISTRICT">
            <legend>DISTRICT</legend>
            <label>CT</label>
            <input type="text" value="CHIT" /><br />
            <label>VJ</label><input type="text" value="VIJAYA" /><br />
       
        </fieldset>
       
    </fieldset>
</fieldset></div></div>
</form>

 从HTML表单需要获取DOM对象，根据fieldset id创建元素节点并生成teh子节点。需要生成以下xml格式12vija