Delete Sharepoint List Item using Javascript

Delete Sharepoint List Item using sharepoint webservices list.asmx soap

<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.");
}