var xHRObject = false;

if (window.XMLHttpRequest)
{
xHRObject = new XMLHttpRequest();
}
else if (window.ActiveXObject)
{
xHRObject = new ActiveXObject("Microsoft.XMLHTTP");
}


function loadDocument(fileName) {
    var xmlDoc = null
    if (window.ActiveXObject)
    {
        xmlDoc = new ActiveXObject("MSXML2.DOMDocument.3.0")
    }
    else
    {
         document.implementation.createDocument("","",null);
    }
    xmlDoc.async = false;
    xmlDoc.load(fileName);
    return xmlDoc;
}

function transformToHTML(xmlDoc, xslDoc) {
     var html = "";
     if (window.XSLTProcessor) {
          var xsltProc = new XSLTProcessor();
          xsltProc.importStylesheet(xslDoc);
          var fragment = xsltProc.transformToFragment(xmlDoc, document);
          html = new XMLSerializer().serializeToString(fragment);
     } else if (window.ActiveXObject) {
          html = xmlDoc.transformNode(xslDoc);
     }
     return html;
}


  
function getData()
{
    //Check to see if the XMlHttpRequest object is ready and whether it has  
    //returned a legitmate response
    if (xHRObject.readyState == 4) 
    {
 if  (xHRObject.status == 200)
        {           

        // Load XML 
        var xml = loadDocument("Stocks.xml");   
        //Load XSL
        var xsl = loadDocument("Stocks.xsl");
         //Transform
        document.getElementById("Stocks").innerHTML = transformToHTML(xml, xsl);
        //Clear the object and call the getDocument function in 5 seconds
        setTimeout("getDocument()", 5000);
    }
            else
        {
           var Stocks = document.getElementById("Stocks");
            if (Stocks.innerHTML.indexOf("available")==-1)
            {
                Stocks.innerHTML += "<br/><span>Current stock information not available, currently showing the last available data</span>";            
            }
            xHRObject.abort();
            setTimeout("getDocument()", 5000);       
        }
}
}      
    
function getDocument()
{
    xHRObject.open("GET", "GetStocksList.aspx?id=" + Number(new Date()), true);
    xHRObject.onreadystatechange = getData;
    if (xHRObject.overrideMimeType) {
        xHRObject.overrideMimeType("text/plain");
    }
    xHRObject.send(null);
}