// declare a global  XMLHTTP Request object
var XmlHttpObj;

// 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 IndustryListOnChange() 
{
    var continentList = document.getElementById("IndustryList");
    
    // get selected continent from dropdown list
    var selectedContinent = continentList.options[continentList.selectedIndex].value;
    
    // url of page that will send xml data back to client browser
    var requestUrl;
    // use the following line if using asp
    //requestUrl = "xml_data_provider.php" + "?filter=" + encodeURIComponent(selectedContinent);
    //alert(encodeURIComponent(selectedContinent));
    requestUrl = "/media/xmldata/industry-" + encodeURIComponent(selectedContinent) + ".xml";
    // use the following line if using php
    // requestUrl = "xml_data_provider.php" + "?filter=" + encodeURIComponent(selectedContinent);
    
	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)
	{
		// To make sure valid response is received from the server, 200 means response received is OK
		if(XmlHttpObj.status == 200)
		{	
            
			PopulateCountryList(XmlHttpObj.responseXML.documentElement);
		}
		else
		{
			alert("problem retrieving data from the server, status code: "  + XmlHttpObj.status + " reponse text: " + XmlHttpObj.responseText);
       
           
		}
	}
}

// populate the contents of the country dropdown list
function PopulateCountryList(countryNode)
{
    
    var countryList = document.getElementById("IndustryCatList");
	// clear the country list 
	for (var count = countryList.options.length-1; count >-1; count--)
	{
		countryList.options[count] = null;
	}

	var countryNodes = countryNode.getElementsByTagName('category');
	//var idValue;
	var textValue; 
	var optionItem;
	// populate the dropdown list with data from the xml doc
	for (var count = 0; count < countryNodes.length; count++)
	{
   		textValue = GetInnerText(countryNodes[count]);
		//idValue = countryNodes[count].getAttribute("id");
		optionItem = new Option( textValue, textValue,  false, false);
		countryList.options[countryList.length] = optionItem;
	}
}

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

function IndustryListOnChangeTest() 
{
    var continentList = document.getElementById("id_industry");
    
    // get selected continent from dropdown list
    var selectedContinent = continentList.options[continentList.selectedIndex].value;
    //alert("fred:" + encodeURIComponent(selectedContinent) + ":");
    if(encodeURIComponent(selectedContinent) == '')
    {
        var countryList = document.getElementById("id_industry_category");
            // clear the country list 
            for (var count = countryList.options.length-1; count >-1; count--)
            {
                countryList.options[count] = null;
            }
        return;
    }
    // url of page that will send xml data back to client browser
    var requestUrl;
    // use the following line if using asp
    //requestUrl = "xml_data_provider.php" + "?filter=" + encodeURIComponent(selectedContinent);
    //alert(encodeURIComponent(selectedContinent));
    requestUrl = "/media/xmldata/industry-" + encodeURIComponent(selectedContinent) + ".xml";
    // use the following line if using php
    // requestUrl = "xml_data_provider.php" + "?filter=" + encodeURIComponent(selectedContinent);
    
	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 = StateChangeHandlerTest;
		
		// 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);		
	}
}

function StateChangeHandlerTest()
{
	// state ==4 indicates receiving response data from server is completed
	if(XmlHttpObj.readyState == 4)
	{
		// To make sure valid response is received from the server, 200 means response received is OK
		if(XmlHttpObj.status == 200)
		{	
            
            var countryNode = XmlHttpObj.responseXML.documentElement
			//PopulateCountryList(XmlHttpObj.responseXML.documentElement);
            //alert("Populating test");
            var countryList = document.getElementById("id_industry_category");
            // clear the country list 
            for (var count = countryList.options.length-1; count >-1; count--)
            {
                countryList.options[count] = null;
            }
            
            var countryNodes = countryNode.getElementsByTagName('category');
        	//var idValue;
        	var textValue; 
        	var optionItem;
        	// populate the dropdown list with data from the xml doc
        	for (var count = 0; count < countryNodes.length; count++)
        	{
           		textValue = GetInnerText(countryNodes[count]);
        		//idValue = countryNodes[count].getAttribute("id");
        		optionItem = new Option( textValue, textValue,  false, false);
        		countryList.options[countryList.length] = optionItem;
        	}
            
            
		}
		else
		{
			alert("problem retrieving data from the server, status code: "  + XmlHttpObj.status + " reponse text: " + XmlHttpObj.responseText);
       
           
		}
	}
}

function ContactTypeOnChange() 
{
   
    var contactType = document.getElementById("id_contact_type");
    var contactValue = contactType.options[contactType.selectedIndex].value;
    //var ordernumberTextBox = document.getElementById("id_orderno");
    //var ordernumberLabel = document.getElementById("id_label_ordernumber");
    /*
    if(contactValue == 'purchase')
    {
        
        ordernumberTextBox.style.visibility = 'visible';
        ordernumberLabel.style.visibility = 'visible';
    }else{
    
        ordernumberTextBox.style.visibility = 'hidden';
        ordernumberLabel.style.visibility = 'hidden';
    }
    */
    if(contactValue == 'general')
    {
        $('#contactheading').html('Contact siliconcoach');
    
    }else{
    
        $('#contactheading').html('Trial Software Request');
    }
  
}

function AjaxformOnLoad()
{
    ContactTypeOnChange();
    IndustryListOnChangeTest();
}