Delete Sharepoint List Item using Javascript

In this code , I will en Deleting List items using SharePoint Web Services. The code uses Javascript Below is the code snippet to call a Javascript function Delete Sharepoint List Item using Javascript

<script type="text/javascript">
    function Delete ()
    {
        var UpdateNewItemXml= "<Batch OnError='Continue' ListVersion='1'>"

            + "<Method ID=\"1\" Cmd=\"Delete\">"

            + "<Field Name='ID'>2</Field>"
            + "<Field Name='Name'>Mack</Field>"

            + "</Method>"

            + "</Batch>";
        FeedbackHTTP = new ActiveXObject("MSXML2.XMLHTTP.3.0");
        FeedbackHTTP.Open("POST", "http://sp2k10srvr:800/sites/test/_vti_bin/lists.asmx", false);
        FeedbackHTTP.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
        FeedbackHTTP.setRequestHeader("SOAPAction","http://schemas.microsoft.com/sharepoint/soap/UpdateListItems");
        var strSOAP = "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
 +"<soap:Envelopexmlns:xsi=\"http://www.w3.org/2001/XMLSchemainstance\"xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"

        + "<soap:Body>"

        + "<UpdateListItems xmlns=\"http://schemas.microsoft.com/sharepoint/soap/\">"

        + "<listName>31stmay</listName>"

        + "<updates>"+ UpdateNewItemXml + "</updates>"

        + "</UpdateListItems>"

        + "</soap:Body>"

        + "</soap:Envelope>";



        FeedbackHTTP.Send(strSOAP);

        alert("Thank you! your suggestion has been Deleted successfully.");

    }
    </script>