function createRequestObject() {
var obj;
if(window.XMLHttpRequest)
{ obj = new XMLHttpRequest();} else if(window.ActiveXObject)
{var ieversions = ['Msxml2.XMLHTTP','Microsoft.XMLHTTP','Msxml2.XMLHTTP.5.0','Msxml2.XMLHTTP.4.0','Msxml2.XMLHTTP.3.0'];
for(var i=0; !obj && i<ieversions.length; i++) { 
try { 
obj = new ActiveXObject(ieversions[i]); 
} catch(e) { 
obj = null; 
}
}
}
return obj;
}

function add(id) {
	document.getElementById('ajout').style.display='none';
	var http=createRequestObject();
	http.open('get', '/add?i='+id, true);
	http.onreadystatechange =function() {
		if(http.readyState==4) {
			if(http.status==200) {
				document.getElementById('retire').style.display='';
			}
		}
	}
	http.send(null);
}

function remove(id) {
	document.getElementById('retire').style.display='none';
	var http=createRequestObject();
	http.open('get', '/remove?idf='+id, true);
	http.onreadystatechange =function() {
		if(http.readyState==4) {
			if(http.status==200) {
				document.getElementById('ajout').style.display='';
			}
		}
	}
	http.send(null);
}