//NT
function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var httpRequest = createRequestObject();
var respHandler;

function RequestPage(url, responseHandler)
{
	respHandler =  responseHandler;
	
	httpRequest.open('get', url, true);
	httpRequest.onreadystatechange = Response;
	httpRequest.send(null);
}

function Response()
{
    if(httpRequest.readyState == 4)
    {
       respHandler(httpRequest.responseText);
	}
}