var ajax=null;
			var browser = navigator.appName;
			
			if (browser == "Microsoft Internet Explorer")
				ajax = new ActiveXObject("Microsoft.XMLHTTP");
			else
				ajax = new XMLHttpRequest();
	

			////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
			
			function ajax_recherche2(saisie)
			{
				if( saisie.length > 1 )
				{
					ajax.open('post', 'js/ajax/ajax_recherche.php');
					ajax.onreadystatechange = recevoirReponse2;
					ajax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
					ajax.send("saisie="+saisie);
				}
				else
				{
					log_recherche("");
				}
			}
			
			
			function recevoirReponse2()
			{
				switch(ajax.readyState)
				{
					case 0:
					case 1:
						log_recherche("recherche ..."); // connexion
					break;
					case 2:
						log_recherche("requete envoyée"); // emission
					break;
					case 3:
						log_recherche("reception des resultats"); // reception
					break;
					case 4:
						//donnČes arrivČes
						//ajax.status contient 200, 404, ...
						//ajax.statusText contient OK, NOT FOUND, ...
						var reponseTexte = ajax.responseText;
						log_recherche(reponseTexte);
						//traitement
						///...
					break;	
				}
			}
			
			function log_recherche(text)
			{
				document.getElementById("reponse_search").innerHTML = text;
			}