Show how many activities/history associated with a record

Sometimes we want to see how many activities/history associated with a record, it's nice to have a number just like the Outlook Inbox.

Here's the code, it works fine on both CRM 3.0 and 4.0 (slightly different). Please notice that you have to reload the record to get the current number after you add/close an activity.

var buXml = GetRegardingActivity();

if(buXml != null)
{
    var buNodes = buXml.selectNodes("//BusinessEntity/statecode"); // CRM 3.0

    //var buNodes = buXml.selectNodes("//BusinessEntity/q1:statecode"); // CRM 4.0
    var iActivity = 0;
    var iHistory = 0;

    if(buNodes != null )
    {
        /*get values*/
        for( i = 0; i < buNodes.length; i++)
        {
            switch(buNodes[i].text)
            {
                case "Open" : iActivity++; break;
                case "Scheduled" : iActivity++; break;
                case "Completed" : iHistory++; break;
                case "Canceled" : iHistory++; break;
            }
        }

        if(document.getElementById('navActivities') != null)
        {
            document.getElementById('navActivities').getElementsByTagName('NOBR')[0].innerText = document.getElementById('navActivities').getElementsByTagName('NOBR')[0].innerText + " (" + iActivity + ")";
        }

        if(document.getElementById('navActivityHistory') != null)
        {
            document.getElementById('navActivityHistory').getElementsByTagName('NOBR')[0].innerText = document.getElementById('navActivityHistory').getElementsByTagName('NOBR')[0].innerText + " (" + iHistory + ")";
        }
    }
}

function GetRegardingActivity()
{
    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\">" +
    " <soap:Body>" +
    " <query xmlns:q1=\"http://schemas.microsoft.com/crm/2006/Query\" xsi:type=\"q1:QueryExpression\" xmlns=\"http://schemas.microsoft.com/crm/2006/WebServices\">" +
    " <q1:EntityName>activitypointer</q1:EntityName>" +
    " <q1:ColumnSet xsi:type=\"q1:ColumnSet\">" +
    " <q1:Attributes>" +
    " <q1:Attribute>statecode</q1:Attribute>" +
    " </q1:Attributes>" +
    " </q1:ColumnSet>" +
    " <q1:Distinct>false</q1:Distinct>" +
    " <q1:Criteria>" +
    " <q1:FilterOperator>And</q1:FilterOperator>" +
    " <q1:Conditions>" +
    " <q1:Condition>" +
    " <q1:AttributeName>regardingobjectid</q1:AttributeName>" +
    " <q1:Operator>Equal</q1:Operator>" +
    " <q1:Values>" +
    " <q1:Value xsi:type=\"xsd:string\">" + crmForm.ObjectId + "</q1:Value>" +
    " </q1:Values>" +
    " </q1:Condition>" +
    " </q1:Conditions>" +
    " </q1:Criteria>" +
    " </query>" +
    " </soap:Body>" +
    "</soap:Envelope>" +
    "";

    var xmlHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");
    xmlHttpRequest.Open("POST", "/mscrmservices/2006/CrmService.asmx", false);
    xmlHttpRequest.setRequestHeader("SOAPAction","http://schemas.microsoft.com/crm/2006/WebServices/RetrieveMultiple");
    xmlHttpRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
    xmlHttpRequest.setRequestHeader("Content-Length", xml.length);
    xmlHttpRequest.send(xml);

    var resultXml = xmlHttpRequest.responseXML;
    return resultXml;
}

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