function getNivoses()
	{
	//définition de l'endroit d'affichage:
    var content = document.getElementById("nivose");
	
	if(content.innerHTML!='') content.innerHTML='';
	else
		{
		document.getElementById('loading_nivoses').style.display='inline';
		if(window.ActiveXObject) var XhrObj = new ActiveXObject("Microsoft.XMLHTTP") ;
		else var XhrObj = new XMLHttpRequest();
    
		// Ouverture
		XhrObj.open("GET", "nivoses/getnivoses.php");

		//Ok pour la page cible
		XhrObj.onreadystatechange = function()
			{
			if (XhrObj.readyState == 4 && XhrObj.status == 200)
				{
				content.innerHTML = XhrObj.responseText ;
				document.getElementById('loading_nivoses').style.display='none';
				}
			}    

		XhrObj.send(null);
		}
	}