// Javascript for AJAX postbacks.

var xmlHttp; // xmlHttpRequest object.
var selectedDivTag; // request div tag.

// Binds a choice page to a choice div tag.
function SendRequest(url, divTag)
{ 
	xmlHttp = GetXmlHttpObject();
	if (xmlHttp == null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	} 
	selectedDivTag = divTag;
	xmlHttp.onreadystatechange = StateChanged;
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);
}

function StateChanged() 
{     
	if (xmlHttp.readyState==4)
	{ 
		document.getElementById(selectedDivTag).innerHTML = xmlHttp.responseText;
	}
}   

// Creates an xmlHttpObject.
function GetXmlHttpObject()
{
	var xmlHttp=null;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}