var xmlHttp;
function GetXmlHttpObject(){
    var objXMLHttp=null;
    if (window.XMLHttpRequest)
        objXMLHttp=new XMLHttpRequest();
    else if (window.ActiveXObject)
        objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
    return objXMLHttp;
} 
function aff(musica){
  xmlHttp = GetXmlHttpObject();
  if (xmlHttp == null)    {
    alert("Votre navigateur ne supporte pas les requêtes HTTP.");
    return false;       }
  var url="rep.inc.php";
  xmlHttp.onreadystatechange = function (){
   if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete")        {
    document.getElementById("photo").innerHTML = xmlHttp.responseText;    }   }
  var params = "musica="+musica;
    xmlHttp.open("POST", url, true);
    xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");
    xmlHttp.send(params);   
    return true;
}