XmlHttp Request

// XmlHttp Request
var AjaxRequest = function (crmSvcUrl, soapString) {
var XmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
XmlHttp.open("POST", crmSvcUrl, false);
XmlHttp.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
XmlHttp.setRequestHeader("SOAPAction",
"http://schemas.microsoft.com/crm/2007/WebServices/Fetch");
XmlHttp.setRequestHeader("Content-Length", soapString.length);
XmlHttp.send(soapString);
var resultXml = XmlHttp.responseXML;
return resultXml;
};