var xhr = null;
var xhr2 = null;
 
// Fonction de creation de l'objet XMLHttpRequest qui resservira pour chaques fonctions AJAX
function getXhr()
 {
  if(window.XMLHttpRequest) xhr = new XMLHttpRequest(); 
  else if(window.ActiveXObject)
   {  
	xhr = new ActiveXObject("Microsoft.XMLHTTP");
/*
	try
     {
      xhr = new ActiveXObject("Msxml2.XMLHTTP");
     }
    catch (e)
     {
      xhr = new ActiveXObject("Microsoft.XMLHTTP");
     }
*/
   }
  else 
   { 
    alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest, veuillez le mettre à jour"); 
    xhr = false; 
   } 
 }

 function getXhr2()
 {
  if(window.XMLHttpRequest) xhr2 = new XMLHttpRequest();
  else if(window.ActiveXObject)
   {
        xhr2 = new ActiveXObject("Microsoft.XMLHTTP");
/*
        try
     {
      xhr = new ActiveXObject("Msxml2.XMLHTTP");
     }
    catch (e)
     {
      xhr = new ActiveXObject("Microsoft.XMLHTTP");
     }
*/
   }
  else
   {
    alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest, veuillez le mettre à jour");
    xhr2 = false;
   }
 }


function Change_instru_init(New_cate) 
	{

	document.getElementById('img_style').src='../IMAGES/loading.gif';

	Affiche_liste_style(New_cate);

	Change_style_init(New_cate, '');
	}


function Affiche_liste_style(New_cate)
 {

var params = 'New_cate=' + New_cate ;

  getXhr();
  xhr.onreadystatechange = function()
   {
    if(xhr.readyState == 4 && xhr.status == 200)
     {
      
		var resultat = xhr.responseText;
	
			var span_indice_ok = 'span__styleliste';

		document.getElementById(span_indice_ok).innerHTML = resultat ;
		
		document.getElementById('img_style').src='../IMAGES/a.gif';
	 }
   }

	
var url = "../ajax/serveur/affiche_part_liste_style_PS_fr_free_sheet_music.php";

	xhr.open("POST",url ,true);
	xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	xhr.setRequestHeader("Content-length", params.length);
	xhr.setRequestHeader("Connection", "close");  
	xhr.send(params);

 
 }

function Change_style_init(New_cate, New_style) 
	{
	document.getElementById('img_ssstyle').src='../IMAGES/loading.gif';

	Affiche_liste_ssstyle(New_cate, New_style);

	}


function Affiche_liste_ssstyle(New_cate, New_style)
 {

var params = 'New_cate=' + New_cate + '&New_style=' + New_style ;

  getXhr2();
  xhr2.onreadystatechange = function()
   {
    if(xhr2.readyState == 4 && xhr2.status == 200)
     {
      
		var resultat = xhr2.responseText;
	
		var span_indice_ok = 'span__ssstyleliste';

		document.getElementById(span_indice_ok).innerHTML = resultat ;
		
		document.getElementById('img_ssstyle').src='../IMAGES/a.gif';
	 }
   }
	
var url = "../ajax/serveur/affiche_part_liste_ssstyle_PS_fr_free_sheet_music.php";

	xhr2.open("POST",url ,true);
	xhr2.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	xhr2.setRequestHeader("Content-length", params.length);
	xhr2.setRequestHeader("Connection", "close");  
	xhr2.send(params);

 
 }