var xmlHttp;
var oTargetDiv;

function postContentFromUrl(url, targetDiv, postData)
{
	xmlHttp = GetXmlHttpObject();
	if ( xmlHttp == null )
	{
		alert ("Browser does not support HTTP Request");
		return;
	}

	oTargetDiv = targetDiv;

	xmlHttp.onreadystatechange = stateChanged4Content;
	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xmlHttp.send(postData);
}

function getContentFromUrl(url, targetDiv)
{
	xmlHttp = GetXmlHttpObject();
	if ( xmlHttp == null )
	{
		alert ("Browser does not support HTTP Request");
		return;
	}

	oTargetDiv = targetDiv;

	xmlHttp.onreadystatechange = stateChanged4Content;
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);
}

function stateChanged4Content()
{ 
	if ( xmlHttp.readyState == 4 || xmlHttp.readyState == "complete" )
	{
		oTargetDiv.innerHTML = xmlHttp.responseText;
	}
}

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;
}