function renseigne_temps_passe(page){
	if(page=='index'){
		url='connexion/sortie.php';
	}else{
		url='../connexion/sortie.php';
	}
	http=createRequestObject();
	http.open('get', url, true);
	http.onreadystatechange = handleAJAXReturn;
	http.send(null);
}
function renseigne_resolution(page){
	resolution = screen.width+"*"+screen.height;
	if(page=='index'){
		url='connexion/entree.php?r='+resolution;
	}else{
		url='../connexion/entree.php?r='+resolution;
	}
	http=createRequestObject();
	http.open('get', url, true);
	http.onreadystatechange = handleAJAXReturn;
	http.send(null);
}
function createRequestObject()
{
    var http;
    if(window.XMLHttpRequest)
    { // Mozilla, Safari, ...
        http = new XMLHttpRequest();
    }
    else if(window.ActiveXObject)
    { // Internet Explorer
        http = new ActiveXObject("Microsoft.XMLHTTP");
    }
    return http;
}
function handleAJAXReturn()
{
    if(http.readyState == 4)
    {
        if(http.status == 200)
        {
            //alert(http.responseText);
        }
    }
}