function refrtab(cible,urlb) {
	 	 //alert(urlb);
				var xhr_object = null;   
				if(window.XMLHttpRequest)
				xhr_object = new XMLHttpRequest();   
				else if(window.ActiveXObject)
				xhr_object = new ActiveXObject("Microsoft.XMLHTTP");   
				else { alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest..."); return; }  
				 
				xhr_object.open("GET", urlb, false);   
xhr_object.send(null);  // alert (xhr_object.responseText);    
if(xhr_object.readyState == 4) document.getElementById(cible).innerHTML = xhr_object.responseText;	}