function afficher()
{ 
	var doc = document.all.anim.style;
	doc.display='block';
    var xhr; 
		if (window.XMLHttpRequest)                 //  Objet de la fenêtre courant
	{ 
		xhr = new XMLHttpRequest();     //  Firefox, Safari, ...
	} 
	else 
	   if (window.ActiveXObject)                    //  Version Active
	   {
		  xhr = new ActiveXObject("Microsoft.XMLHTTP");   // Internet Explorer 
	   }

    xhr.onreadystatechange  = function()
    { 
         
		 if(xhr.readyState  == 4)
         {
             doc.height = 'auto';
			 doc.background ='url(ident_bg.png) top left repeat-x #fff';
			 if(xhr.status  == 200) 			  	 
                 document.getElementById("anim").innerHTML = xhr.responseText;	
              else 
                 document.ajax.dyn="Error code " + xhr.status;
         }
		 else { 
		 doc.height = 'auto';
		 doc.backgroundColor = '#fff';
		 document.getElementById("anim").innerHTML = '<center><img src="loading.gif"></center>';
		
		 }
    }; 

   xhr.open("GET", "cdcajax.php",  true); 
   xhr.send(null); 
}