var XMLHttpRequestObject = createXMLHttpRequestObject();

function createXMLHttpRequestObject(){
	var XMLHttpRequestObject = false;
	try{
		XMLHttpRequestObject = new XMLHttpRequest();
	}
	catch(e){
		var aryXmlHttp = new Array(
				"MSXML2.XMLHTTP",
				"Microsoft.XMLHTTP",
				"MSXML2.XMLHTTP.6.0",
				"MSXML2.XMLHTTP.5.0",
				"MSXML2.XMLHTTP.4.0",
				"MSXML2.XMLHTTP.3.0"
		);
		for (var i=0; i<aryXmlHttp.length && !XMLHttpRequestObject; i++){
			try{
				XMLHttpRequestObject = new ActiveXObject(aryXmlHttp[i]);
			}
			catch (e) {}
		}
	}
  
	if (!XMLHttpRequestObject){
		alert("Error: failed to create the XMLHttpRequest object.");
	}
	else{
		return XMLHttpRequestObject;
	}
}

function getData(dataSource, divID){
	document.getElementById(divID).innerHTML = '<center><img src=images/loading.gif></center>';
	if(XMLHttpRequestObject){
		dataSource += "&parm="+new Date().getTime();

		XMLHttpRequestObject.open("GET", dataSource);
		XMLHttpRequestObject.onreadystatechange = function(){
			try{
				if (XMLHttpRequestObject.readyState == 4 &&
					XMLHttpRequestObject.status == 200)
				{
					var objDiv = document.getElementById(divID);
					objDiv.innerHTML = XMLHttpRequestObject.responseText;
				}
			}
			catch(e){}
		}
		try{
			XMLHttpRequestObject.send(null);
		}
		catch(e){}
	}
}
function postData(dataSource, divID){
	if(XMLHttpRequestObject){
		XMLHttpRequestObject.open("POST", dataSource);
		XMLHttpRequestObject.setRequestHeader("Method", "POST " + dataSource + " HTTP/1.1");
		XMLHttpRequestObject.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		XMLHttpRequestObject.onreadystatechange = function(){
			try{
			if (XMLHttpRequestObject.readyState == 4 &&
			XMLHttpRequestObject.status == 200)
			{
				var objDiv = document.getElementById(divID);
				objDiv.innerHTML = XMLHttpRequestObject.responseText;
			}
		}
		catch(e){}
		}
    
		dataSource += "&parm="+new Date().getTime();
		try{
			XMLHttpRequestObject.send(dataSource);
		}
		catch(e){}
	}
}