function Display_oui (id)
{ 
if(document.getElementById(id).style.display == 'none')
	document.getElementById(id).style.display = 'block';
}
function Display_non (id)
{ 
if(document.getElementById(id).style.display == 'block')
	document.getElementById(id).style.display = 'none';
}


function refresh_ville()
{
	
	var data     = null;
	var cp       = document.getElementById('code_postal').value;
	data = 'cp='+cp;
	
	var xhr_object = null;
	if(window.XMLHttpRequest)
		{ // Firefox
			xhr_object = new XMLHttpRequest();
		}
	else if(window.ActiveXObject)
		{ // Internet Explorer
			xhr_object = new ActiveXObject('Microsoft.XMLHTTP');
		}
	var method = 'POST';
	var filename = '../ville.php';
	xhr_object.open(method, filename, true);
	xhr_object.onreadystatechange = function()
		{
			if(xhr_object.readyState == 4)
			{
				var tmp = xhr_object.responseText;
				document.getElementById('eltVille').value = tmp;
			}
		}
	xhr_object.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); 
	xhr_object.send(data);
	//setTimeout('refresh_ville()', 2000);
}