function shutdown(){
	document.getElementById('overlay').style.visibility = 'hidden';
	document.getElementById('fond').style.visibility = 'hidden';
	document.getElementById('btn_container').style.visibility = 'hidden';
	document.getElementById('overlay').style.display = 'none';
	document.body.style.visibility = 'visible';
//	document.body.style.backgroundColor='#CE171C';
	document.body.style.backgroundImage='url(./images/fond_zorro_le_musical.jpg)';
	document.getElementById('Tableau_01').style.visibility='visible';
	//window.location.href = 'modal-test.php?modal=1';
}
function setOpacity(obj, opacity) {
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  // Older Mozilla and Firefox
  //obj.style.MozOpacity = opacity/100;
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}
function overlay(){
  document.body.style.backgroundColor='#000000';
  document.body.style.backgroundImage='none';
  document.getElementById('Tableau_01').style.visibility='hidden';
  var fond = document.getElementById('fond');
  var ctn = document.getElementById('btn_container');
  //var btn = document.getElementById('btn_close');
  document.getElementById('overlay').style.visibility = 'visible';
  fond.style.visibility = 'visible';
  ctn.style.visibility = 'visible';
  //btn.style.visibility = 'visible';
  setOpacity(fond,100);
  //setOpacity(btn,100);
  //fadeIn(fond,btn,0);
}
function shut() {
	var fond = document.getElementById('fond');
	//var btn = document.getElementById('btn_close');
	var ctn = document.getElementById('btn_container');
	fadeOut(fond,ctn,100);
}
function fadeIn(obj1,obj2,opacity) {
    if (opacity <= 100) {
      setOpacity(obj1, opacity);
	  setOpacity(obj2, opacity);
      opacity += 10;
      window.setTimeout( function() {
            fadeIn(obj1,obj2,opacity);
      },25);
    }
}
function fadeOut(obj1,obj2, opacity) {
    if (opacity > 0) {
      setOpacity(obj1, opacity);
	  setOpacity(obj2, opacity);
      opacity -= 10;
      window.setTimeout( function() {
            fadeOut(obj1,obj2,opacity);
      },25);
    }
	else shutdown();
}