javascript getDynamicEnitity sample

var lookupItem  =crmForm.all.uvat_product_machine;
if (lookupItem.DataValue!=null &&  crmForm.all.uvat_name.DataValue==null)
{

  var result=getDynamicEnitity('product',lookupItem.DataValue[0].id,new Array("productnumber"));
 var oName=  getEntityPropertyValue(result.xml,"productnumber");
   if (oName!=undefined && oName!=null)
   {
    crmForm.all.uvat_name.DataValue=oName;
 
   }
}

function getDynamicEnitity(entityName, entityId,attributeNames)
{
    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>" + 
"    <Execute xmlns=\"http://schemas.microsoft.com/crm/2007/WebServices\">" + 
"      <Request xsi:type=\"RetrieveRequest\" ReturnDynamicEntities=\"true\">" + 
"        <Target xsi:type=\"TargetRetrieveDynamic\">" + 
"          <EntityName>"+entityName+"</EntityName>" + 
"          <EntityId>"+entityId+"</EntityId>" + 
"        </Target>" + 
"        <ColumnSet xmlns:q1=\"http://schemas.microsoft.com/crm/2006/Query\" xsi:type=\"q1:ColumnSet\">" + 
"          <q1:Attributes>" + 
getAttributeNamesString(attributeNames)+
"          </q1:Attributes>" + 
"        </ColumnSet>" + 

"      </Request>" + 
"    </Execute>" + 
"  </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/Execute");
xmlHttpRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
xmlHttpRequest.setRequestHeader("Content-Length", xml.length);
xmlHttpRequest.send(xml);

var resultXml = xmlHttpRequest.responseXML;
return resultXml;
}

function getEntityPropertyValue(resultXml, attributeName)
{
// Create an XML object to parse the results.
var xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.loadXML(resultXml);

var ret=xmlDoc.selectSingleNode("//Property[@Name='"+attributeName+"']");

//ret.text enough for return xml;
//in other case this may not enough be careful for this.
if (ret!=null)
  return ret.text;
else
 return null;


}
function getAttributeNamesString(attributes)
{
   
   var strRet="";
   for(i=0;i<attributes.length;i++)
  {
    strRet+=("<q1:Attribute>"+attributes[i]+"</q1:Attribute>") ;

    
  }
   return strRet;
}