var num_onglet = 2;

function get_carousel_home(onglet)
	{
	
   var xhr_object = null; 
	 
   if(window.XMLHttpRequest) // Firefox 
	  xhr_object = new XMLHttpRequest(); 
	else if(window.ActiveXObject) // Internet Explorer 
	  xhr_object = new ActiveXObject("Microsoft.XMLHTTP"); 
   else { // XMLHttpRequest non supporté par le navigateur 
	  alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest..."); 
	  return; 
   } 
 
   xhr_object.open("POST", "get_carousel_home.php", true); 
	 
   xhr_object.onreadystatechange = function() { 
	  if(xhr_object.readyState == 4) 
		 { 
		 document.getElementById('carousel_ajax').innerHTML = xhr_object.responseText; 
		 switch_btn_carousel(onglet);
		 document.getElementById("carousel_ajax").style.display='block';
		 }
		 //alert(xhr_object.responseText); 
   } 
 
   xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); 
   var data = "onglet="+onglet;
   xhr_object.send(data); 
	}
	
function switch_btn_carousel(onglet)
	{
	if(onglet == "edito")
		{
		document.getElementById("bouton_edito").style.backgroundPosition = 'top';
		document.getElementById("bouton_redac").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_nouveaute").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_actu").style.backgroundPosition = 'bottom';
		}
	else if(onglet == "bon_plan")
		{
		document.getElementById("bouton_edito").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_redac").style.backgroundPosition = 'top';
		document.getElementById("bouton_nouveaute").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_actu").style.backgroundPosition = 'bottom';
		}
	else if(onglet == "profil")
		{
		document.getElementById("bouton_edito").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_redac").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_nouveaute").style.backgroundPosition = 'top';
		document.getElementById("bouton_actu").style.backgroundPosition = 'bottom';
		}
	else if(onglet == "site")
		{
		document.getElementById("bouton_edito").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_redac").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_nouveaute").style.backgroundPosition = 'bottom';
		document.getElementById("bouton_actu").style.backgroundPosition = 'top';
		}
	}	
	
	
function display_carousel_home()
	{
	if(num_onglet == 5)
		{ num_onglet = 1; }
		
	if(num_onglet == 1)
		{ var onglet = "edito"; }
	else if(num_onglet == 2)
		{ var onglet = "bon_plan"; }
	else if(num_onglet == 3)
		{ var onglet = "profil"; }
	else if(num_onglet == 4)
		{ var onglet = "site"; }
	num_onglet++;

	document.getElementById("carousel_ajax").style.display='none';
	get_carousel_home(onglet);
	//var mini_timer = setTimeout("get_carousel_home('"+onglet+"')",500);
	}