/** fonction de chargement des images de menu */

function getXhr()
{ 
  var objXMLHttp=null 
  try 
  { 
    objXMLHttp = new ActiveXObject("Msxml2.XMLHTTP"); //later IE 
  } 
  catch (e) 
  { 
 try 
 { 
  objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP"); //earlier IE 
    } 
 catch (e) 
 { 
  objXMLHttp = null; 
 } 
  } 
  if (objXMLHttp==null) 
  { 
    objXMLHttp=new XMLHttpRequest() //IE7, Firefox, Safari 
  } 
  return objXMLHttp 
}


/**
* Méthode qui sera appelée sur le click du bouton
*/

function selection_region(code_postal)
{
 var xhr = getXhr()
 xhr.onreadystatechange = function(){
  if(xhr.readyState == 4 && xhr.status == 200){
   leselect = xhr.responseText;
   document.getElementById('sel_region').innerHTML = leselect;
  }
 }
 xhr.open("POST","reponse_ajax.php",true);
 //'application/x-www-form-urlencoded; charset=utf-8';
// xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
  xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=utf-8');
//code_postal = document.getElementById('zip').value;
 xhr.send("code_postal="+code_postal.value);
 

// sel_region

}