function ajax(url,cible) {

        var http_request = false;

        if (window.XMLHttpRequest) { // Mozilla, Safari,...
            http_request = new XMLHttpRequest();
        } else if (window.ActiveXObject) { // IE
            try {
                http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                try {
                    http_request = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e) {}
            }
        }
        

        if (!http_request) {
            alert('Abandon :( Impossible de créer une instance XMLHTTP');
            return false;
        }
		
        http_request.onreadystatechange = function() { alertContents(http_request, cible); };
        http_request.open('GET', url, true);
        http_request.send(null);
	
    }

	function alertContents(http_request, cible) {
		document.getElementById(cible).innerHTML = "<img src='images/indicator.gif'>";
        if (http_request.readyState == 4) {
            if (http_request.status == 200) {
           	
				document.getElementById(cible).innerHTML = http_request.responseText;
				
            } else {
            
                alert('Un problème est survenu avec la requête.' + http_request.status);
                
            }
        }

    }