function new_xhr(){
	var xhr_object = null;
	if(window.XMLHttpRequest) 
	   xhr_object = new XMLHttpRequest();
	else if(window.ActiveXObject){ 
	   try {
                xhr_object = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
            }
	}
	else { 
	   alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
	   xhr_object = false;
	}
	return xhr_object;
}


function load_page(select) {
	var xhr2 = new_xhr();
	xhr2.onreadystatechange = function(){
		if ( xhr2.readyState == 4 ){
			if(xhr2.status  != 200){
				document.getElementById("content").innerHTML = select.split('?')[1]+".html";
			} else {
				document.getElementById("content").innerHTML = xhr2.responseText;
			}
		} else {
			document.getElementById("content").innerHTML = "<div style='height:500px'></div>";
		}
	}
	xhr2.open("GET", select.split('?')[1]+".html", true);
	xhr2.send(null);
}