var xhr = null;
var iCurrentPage = 6;

function createXhrObject()
{
    if (window.XMLHttpRequest)
        return new XMLHttpRequest();
    if (window.ActiveXObject)
    {
        var names = [
            "Msxml2.XMLHTTP.6.0",
            "Msxml2.XMLHTTP.3.0",
            "Msxml2.XMLHTTP",
            "Microsoft.XMLHTTP"
        ];
        for(var i in names)
        {
            try{ return new ActiveXObject(names[i]); }
            catch(e){}
        }
    }
    window.alert("Votre navigateur ne prend pas en charge l'objet XMLHTTPRequest.");
    return null; // non supporté
}

function	showNextNews()
{
    xhr.onreadystatechange = function()
	{
	    if (xhr.readyState == 1)
	    {
			document.getElementById('loader').style.display = "block";
		}
	    if(xhr.readyState == 4 && xhr.status == 200)
	    {
			document.getElementById('news').innerHTML += xhr.responseText;
			document.getElementById('loader').style.display = "none";
			iCurrentPage += 2;
	    }	
	}

	var sSend = "news="+iCurrentPage;
    var websrv = "include/libs/Javascript/ajax_news.php";

    xhr.open("POST", websrv, true);
    xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    xhr.send(sSend);	
}

xhr = createXhrObject();