var xhr = null
function get_Xhr()
 {
  if(window.XMLHttpRequest)
   {
    xhr = new XMLHttpRequest();
   }
  else if(window.ActiveXOject)
   {
    try
     {
      xhr = new ActiveXObject("Msxml2.XMLHTTP");
	  
     }
    catch(e)
     {
      try
       {
        xhr = new ActiveXObject("Microsoft.XMLHTTP");
		
       }
      catch(el)
       {
        xhr = null;
		
       }
     }
   }
  else
   {
    alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest\nVeuillez le mettre à jour");
   }
  return xhr;
 }
function testform(chocolat)
{

get_Xhr();

 xhr.onreadystatechange  = function() {
alert("moche "+xhr.status);
         if(xhr.readyState == 4)
         {
             document.getElementById('blabla').innerHTML = xhr.responseText;
         }
    };
   xhr.open("POST", "../Pages/ajax.php",  true);
   xhr.setRequestHeader('Content-Type','x-www-form-urlencoded');
   valblabla = document.getElementById('dyn').value;
   xhr.send("type="+chocolat+"&text="+valblabla); 

}