// declare a global  XMLHTTP Request object
var XmlHttpObj;
var fldTofill;
// create an instance of XMLHTTPRequest Object, varies with browser type, try for IE first then Mozilla
function CreateXmlHttpObj()
{
	// try creating for IE (note: we don't know the user's browser type here, just attempting IE first.)
	try
	{
		XmlHttpObj = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch(e)
	{
		try
		{
			XmlHttpObj = new ActiveXObject("Microsoft.XMLHTTP");
		} 
		catch(oc)
		{
			XmlHttpObj = null;
		}
	}
	// if unable to create using IE specific code then try creating for Mozilla (FireFox) 
	if(!XmlHttpObj && typeof XMLHttpRequest != "undefined") 
	{
		XmlHttpObj = new XMLHttpRequest();
	}
}

// called from onChange or onClick event of the continent dropdown list
function CaricaBanner(a)
{
	//alert(a);
    // url of page that will send xml data back to client browser
    var requestUrl;
    // use the following line if using asp
	
    requestUrl = "banner.php?id="+a;
    // use the following line if using php
    // requestUrl = "xml_data_provider.php" + "?filter=" + encodeURIComponent(selectedContinent);
	
	//alert(requestUrl);
	
	CreateXmlHttpObj();
	
	// verify XmlHttpObj variable was successfully initialized
	if(XmlHttpObj)
	{
        // assign the StateChangeHandler function ( defined below in this file)
        // to be called when the state of the XmlHttpObj changes
        // receiving data back from the server is one such change
		XmlHttpObj.onreadystatechange = StateChangeHandler;
		
		// define the iteraction with the server -- true for as asynchronous.
		XmlHttpObj.open("GET", requestUrl,  true);
		
		// send request to server, null arg  when using "GET"
		XmlHttpObj.send(null);		
	}
}


// this function called when state of  XmlHttpObj changes
// we're interested in the state that indicates data has been
// received from the server
function StateChangeHandler()
{
	//state ==4 indicates receiving response data from server is completed
	if(XmlHttpObj.readyState == 4)
	{
		//alert('xmlhttpReadyState = '+XmlHttpObj.readyState);
		// To make sure valid response is received from the server, 200 means response received is OK
		if(XmlHttpObj.status == 200)
		{
			//alert('xmlhttpStatus = '+XmlHttpObj.status);
			//alert(XmlHttpObj.responseXML.innerXML);
			var xmlResp = XmlHttpObj.responseXML;
			//alert(xmlResp);
			//alert(XmlHttpObj.responseXML.documentElement.getElementsByTagName('BSponsor')[0].firstChild.data);
			estraiBanner(XmlHttpObj.responseXML.documentElement);
		}
		else
		{
			alert("problem retrieving data from the server, status code: "  + XmlHttpObj.status);
		}
	}
}

// populate the contents of the country dropdown list
function estraiBanner(xmldoc)
{
	var link = xmldoc.getElementsByTagName('BSponsor');
	var img = xmldoc.getElementsByTagName('Bimg');
	var id = xmldoc.getElementsByTagName('Bid');
	
	var idValue = GetInnerText(id[0]);
	var imgValue = GetInnerText(img[0]);
	var linkValue = GetInnerText(link[0]);
	
	var risultato = "<a href='index.php?pos=sponsor&id="+linkValue+"'><img src='../newCMS/banner/file/"+imgValue+"' border='0' width='118'></a>";
	//alert(risultato);
	document.getElementById('risultato').innerHTML = risultato;
	document.getElementById('idImg').value = idValue;
}

// returns the node text value 
function GetInnerText (node)
{
	 return (node.textContent || node.innerText || node.text || node.firstChild.data) ;
}