Fetch Error JavaScript

Hi I want on filling the comment card lookup, fetch (get) fields from comment card to case:

Guest, Incident Type (from CC Type), and date of incident (from date of visit) .. But Its giving an error any help ?



// ----- Start Of Script : Fetch Guest, Incident type and date of incident from commentcard
 Fetch Area Code from Area

function FetchCommentCard ()
{
   var CC= Xrm.Page.getAttribute("new_commentcard").getValue();

   if (CC != null && CC != "")
   {
      var  Guest;
      var  IncidentType;
      var  dateOfIncident;

      var serverUrl = Xrm.Page.context.getClientUrl();

      if (serverUrl.match(/\/$/))
      {
         serverUrl = serverUrl.substring(0, serverUrl.length - 1);
      }

      // To be updated as required
      var fetchXml = "<fetch mapping='logical' version='1.0'>"
      + "<entity name='new_commentcard'>"
      + "<attribute name='new_commentcardid'/>"
      + "<attribute name='new_cctype'/>"
      + "<attribute name='new_dateofvisit'/>"
      + "<filter>"
      + "<condition attribute='new_commentcard' operator='eq' value='" + CC[0].id + "'/>"
      + "</filter>"
      + "</entity>"
      + "</fetch>";

      var xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +"<soapenv:Envelope xmlns:soapenv=\"schemas.xmlsoap.org/.../envelope\">" +"<soapenv:Body>" +"<RetrieveMultiple xmlns=\"schemas.microsoft.com/.../Services\" xmlns:i=\"www.w3.org/.../XMLSchema-instance\">" +"<query i:type=\"a:FetchExpression\" xmlns:a=\"schemas.microsoft.com/.../Contracts\">" +"<a:Query>" + fetchXml.replace(/\&/g, '&' + 'amp;').replace(/</g, '&' + 'lt;').replace(/>/g, '&' + 'gt;').replace(/\'/g, '&' + 'apos;').replace(/\"/g, '&' + 'quot;') + "</a:Query>" +"</query>" +"</RetrieveMultiple>" +"</soapenv:Body>" +"</soapenv:Envelope>";

      var xmlHttpRequest;
      var doc;
      var result;

      if (window.XMLHttpRequest)
      {
         // code for IE7, IE8, IE9 , IE10 , Firefox, Chrome, Opera, Safari
         xmlHttpRequest = new XMLHttpRequest();
         xmlHttpRequest.open("POST", serverUrl + "/XRMServices/2011/Organization.svc/web", false);
         xmlHttpRequest.setRequestHeader("SOAPAction", "schemas.microsoft.com/.../RetrieveMultiple");
         xmlHttpRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
         xmlHttpRequest.setRequestHeader("Content-Length", xml.length);
         xmlHttpRequest.send(xml);
         result = xmlHttpRequest.responseXML.xml;
      }
      else
      {
         // code for IE6, IE5
         xmlHttpRequest = new ActiveXObject("Microsoft.XMLHTTP");
         xmlHttpRequest.Open("POST", "/mscrmservices/2007/CrmService.asmx", false);

         xmlHttpRequest.setRequestHeader("Content-Length", xml.length);
         xmlHttpRequest.send(xml);
         result = xmlHttpRequest.responseXML.xml;
      }

      if (window.DOMParser)
      {
         parser = new DOMParser();
         doc = parser.parseFromString(xmlHttpRequest.responseText, "text/xml");
      }
      // Internet Explorer
      else
      {
         doc = new ActiveXObject("MSXML2.DOMDocument");
         doc.async = false;
         doc.loadXML(result);
      }

      if (navigator.userAgent.toLowerCase().indexOf("chrome") > - 1)
      {
         var vals = doc.getElementsByTagName("KeyValuePairOfstringanyType");

         for (var j = 0; j < vals.length; j ++ )
         {
            if(vals[j].getElementsByTagName("key")[0].firstChild.nodeValue == "new_commentcard")
            {
               CC = vals[j].getElementsByTagName("value")[0].textContent;

               Xrm.Page.getAttribute("new_commentcardid").setValue(CC);
               Xrm.Page.getAttribute("new_cctype").setValue(CC);
               Xrm.Page.getAttribute("new_dateofvisit").setValue(CC);
           }
         }
      }
      else
      {
         var vals = doc.getElementsByTagName("a:KeyValuePairOfstringanyType");

         for (var j = 0; j < vals.length; j ++ )
         {
            if(vals[j].getElementsByTagName("b:key")[0].firstChild.nodeValue == "new_commentcard")
            {
               CC = vals[j].getElementsByTagName("b:value")[0].textContent;

               Xrm.Page.getAttribute("new_cctype").setValue(CC);
               Xrm.Page.getAttribute("new_commentcardid").setValue(CC);
               Xrm.Page.getAttribute("new_cctype").setValue(CC);
              }
         }
      }
   }
}
// ----- End Of Script