//Global XMLHTTP Request object
var XmlHttp;

//Creating and setting the instance of appropriate XMLHTTP Request object to a “XmlHttp” variable  
function CreateXmlHttp()
{
	//Creating object of XMLHTTP in IE
	try
	{
		XmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch(e)
	{
		try
		{
			XmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		} 
		catch(oc)
		{
			XmlHttp = null;
		}
	}
	//Creating object of XMLHTTP in Mozilla and Safari 
	if(!XmlHttp && typeof XMLHttpRequest != "undefined") 
	{
		XmlHttp = new XMLHttpRequest();
	}
}

//Gets called when country combo box selection changes
function ddlCountryOnChange() 
{
    var ddlState = document.getElementById("Acccreat1_ddlState");
	for (var count = ddlState.options.length-1; count >-1; count--)
	{
		ddlState.options[count] = null;
	}
	ddlState.options.length = 0;

	ddlState.options[0] = new Option("..........");
	var ddlCountry = document.getElementById("Acccreat1_ddlCountry");

	//Getting the selected country from country combo box.
	var selectedCountry = ddlCountry.options[ddlCountry.selectedIndex].value;
	
	// URL to get states for a given country
	var requestUrl = AjaxServerPageName + "?SelectedCountry=" + encodeURIComponent(selectedCountry);
	//alert(requestUrl);
	CreateXmlHttp();
	
	// If browser supports XMLHTTPRequest object
	if(XmlHttp)
	{
		//Setting the event handler for the response
		XmlHttp.onreadystatechange = HandleResponse;
		
		//Initializes the request object with GET (METHOD of posting), 
		//Request URL and sets the request as asynchronous.
		XmlHttp.open("GET", requestUrl,  true);
		
		//Sends the request to server
		XmlHttp.send(null);
	}
	
	showPaymentMethod();
}

function ddlStateOnChange()
{
    var ddlState = document.getElementById("Acccreat1_ddlState");
    var ddlStateItems = document.getElementById("Acccreat1_ddlStateItems");

	var textValue; 
	var optionItem;
	var optionsString = "";
	for (var count = 0; count < ddlState.options.length; count++)
	{
		textValue = ddlState.options[count].text;
		if(count==0)
			optionsString += textValue;
		else
			optionsString += "," + textValue;
		if(ddlState.options[count].selected==true)
			optionsString += ",selected";
	}
	ddlStateItems.value = optionsString;
}

//Called when response comes back from server
function HandleResponse()
{
	// To make sure receiving response data from server is completed
	if(XmlHttp.readyState == 4)
	{
		// To make sure valid response is received from the server, 200 means response received is OK
		if(XmlHttp.status == 200)
		{			
			ClearAndSetddlStateItems(XmlHttp.responseXML.documentElement);
		}
		else
		{
			alert("There was a problem retrieving data from the server." );
		}
	}
}

//Clears the contents of state combo box and adds the states of currently selected country
function ClearAndSetddlStateItems(countryNode)
{
    var ddlState = document.getElementById("Acccreat1_ddlState");
    var ddlStateItems = document.getElementById("Acccreat1_ddlStateItems");

	//Clears the state combo box contents.
	for (var count = ddlState.options.length-1; count >-1; count--)
	{
		ddlState.options[count] = null;
	}

	var stateNodes = countryNode.getElementsByTagName('state');
	var textValue; 
	var optionItem;
	var optionsString = "";
	//Add new states list to the state combo box.
	for (var count = 0; count < stateNodes.length; count++)
	{
   		textValue = GetInnerText(stateNodes[count]);
		optionItem = new Option( textValue, textValue,  false, false);
		ddlState.options[ddlState.length] = optionItem;
		if(count==0)
			optionsString += textValue;
		else
			optionsString += "," + textValue;
		if(ddlState.options[count].selected==true)
			optionsString += ",selected";
	}
	ddlStateItems.value = optionsString;
}

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