Create a task through JavaScript after using Web Service in MS CRM 4.0

Some times we required to create a task for a user through JavaScript, you can do this by the following code

Here you can pass your Description ,Owner, Regarding,subject and created By parametters.

function CreateTask(MangerID,CreatedByID)
{
var CurrentQuoteID = crmForm.all.quotenumber.DataValue;
var xml = "" +
"<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\">" +
GenerateAuthenticationHeader() +
" <soap:Body>" +
" <Create xmlns=\"http://schemas.microsoft.com/crm/2007/WebServices\">" +
" <entity xsi:type=\"task\">" +
" <description>Your Message "+ CurrentQuoteID + "</description>" +
" <ownerid>" + MangerID + "</ownerid>" +
" <regardingobjectid type=\"quote\">" + crmForm.ObjectId + "</regardingobjectid>" +
" <subject>Your Subject "+ CurrentQuoteID + "</subject>" +
" <createdby>" + CreatedByID + "</createdby>" +
" </entity>" +
" </Create>" +
" </soap:Body>" +
"</soap:Envelope>" +
"";

var xmlHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");

xmlHttpRequest.Open("POST", "/mscrmservices/2007/CrmService.asmx", false);
xmlHttpRequest.setRequestHeader("SOAPAction","http://schemas.microsoft.com/crm/2007/WebServices/Create");
xmlHttpRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
xmlHttpRequest.setRequestHeader("Content-Length", xml.length);
xmlHttpRequest.send(xml);

var resultXml = xmlHttpRequest.responseXML;
}