function UpInput(formname, fieldname, listname)
{
	if(document.forms[formname].elements[fieldname].value == '?')
	{
		go(formname, fieldname, listname);
	}
	return;
}

function go(formname, fieldname, listname)
{	
	var login = document.forms[formname].elements['login'].value;
	var pass = document.forms[formname].elements['pass'].value;
	
	if (login == '') 
	{
		alert('Vous devez saisir votre login');
		return;
	}
	
	if (pass == '') 
	{
		alert('Vous devez saisir votre mot de passe');
		return;
	}
	
	document.getElementById('grplogin').style.display='none';
	document.getElementById('wait').style.display='block';

	var xhr_object = null; 
	if(window.XMLHttpRequest) // Firefox 
	{
		xhr_object = new XMLHttpRequest(); 
	}
	else if(window.ActiveXObject) // Internet Explorer 
	{
		xhr_object = new ActiveXObject("Microsoft.XMLHTTP"); 
	}
	else 
	{ // XMLHttpRequest non supporté par le navigateur 
		alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest..."); 
		return; 
	} 
 
	xhr_object.open("POST", "ajaxloadlisteuser.php", true); // Synchrone
	     
	xhr_object.onreadystatechange = function() 
	{ 
		if(xhr_object.readyState == 4) eval(xhr_object.responseText); 
	} 

	xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); 
	var data = "fieldname="+fieldname+"&formname="+formname+"&listname="+listname+"&login="+login+"&pass="+pass; 
	xhr_object.send(data);
	
}