function CheckRunningWorkflow(siteUrl,currentItemFileFullUrl)
{
    var xh=new ActiveXObject("Microsoft.XMLHTTP");

    if (xh==null)
        return "Error: Cannot create XMLHTTP object";

    xh.Open("POST", siteUrl+"/_vti_bin/workflow.asmx", false);
    xh.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
    xh.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/sharepoint/soap/workflow/GetWorkflowDataForItem");

    var soapData='<?xml version="1.0" encoding="utf-8"?>'+
    '<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"'+
    'xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">'+
    '<soap:Body>'+
    '<GetWorkflowDataForItem xmlns="http://schemas.microsoft.com/sharepoint/soap/workflow/"><item>'+
    currentItemFileFullUrl+
    '</item></GetWorkflowDataForItem></soap:Body></soap:Envelope>'

    xh.Send(soapData);   

    if (xh.status==200)
    {
        xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
        if (xmlDoc==null)
            return false;
        xmlDoc.async = "false";                   
        if(!xmlDoc.loadXML(xh.ResponseText))
            return false;
    var xpath = "/soap:Envelope"+
    "/soap:Body"+
    "/GetWorkflowDataForItemResponse"+
    "/GetWorkflowDataForItemResult"+
    "/WorkflowData"+
    "/ActiveWorkflowsData"+
    "/Workflows"+
    "/Workflow"

        var activeWF=xmlDoc.selectSingleNode(xpath)

    //Check if there is an active workflow for current item       
        if(activeWF != null)
        {
        //Check Workflow status code
            if(activeWF.getAttribute("InternalState") == '2')
            {
                return "Running";
            }
        else if(activeWF.getAttribute("InternalState") == '4')
            {
                return "Completed";
            }
        }
    else
    {
        reutrn "No active workflow for this item";
    }

    return "Workflow status for this item is not Running or Completed"
    }
    return "Failed to call web service";
}