var nbrSecondes = 8;
var nbrPhotoMax = 3;
var currentPic  = 1;
window.setTimeout("changerPhoto(2)", nbrSecondes*1000);
applyFadeEffect(1,2);

function changerPhoto(nextPic)
{
   currentPic = nextPic-1;
   if(currentPic<1){ currentPic=nbrPhotoMax; }

   document.getElementById('fdaccueil'+nextPic).style.visibility = "visible";
   document.getElementById('fdaccueil'+currentPic).style.visibility = "hidden";

   currentPic = nextPic;
   nextPic = nextPic+1;
   if(nextPic>nbrPhotoMax){ nextPic=1; }
   window.setTimeout("changerPhoto("+nextPic+")", nbrSecondes*1000);
   applyFadeEffect(currentPic,nextPic);
}


function applyFadeEffect(currentPic,nextPic)
{
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+currentPic+"'),90);",nbrSecondes*1000-1000);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+currentPic+"'),86);",nbrSecondes*1000-800);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+currentPic+"'),83);",nbrSecondes*1000-600);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+currentPic+"'),80);",nbrSecondes*1000-500);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+currentPic+"'),76);",nbrSecondes*1000-400);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+currentPic+"'),73);",nbrSecondes*1000-300);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+currentPic+"'),70);",nbrSecondes*1000-200);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+currentPic+"'),67);",nbrSecondes*1000-100);

  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+nextPic+"'),70);",nbrSecondes*1000);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+nextPic+"'),73);",nbrSecondes*1000+100);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+nextPic+"'),76);",nbrSecondes*1000+200);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+nextPic+"'),80);",nbrSecondes*1000+300);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+nextPic+"'),83);",nbrSecondes*1000+400);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+nextPic+"'),86);",nbrSecondes*1000+500);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+nextPic+"'),90);",nbrSecondes*1000+600);
  window.setTimeout("setOpacity(document.getElementById('fdaccueil"+nextPic+"'),100);",nbrSecondes*1000+800);
}
function setOpacity(obj, opacity)
{
  opacity = (opacity == 100)?99.999:opacity;
  obj.style.filter = "alpha(opacity:"+opacity+")";     // IE/Win <8.0
  obj.style.KHTMLOpacity = opacity/100;                // Safari<1.2, Konqueror
  obj.style.MozOpacity = opacity/100;                  // Older Mozilla and Firefox
  obj.style.opacity = opacity/100;                     // Safari 1.2, newer Firefox and Mozilla, CSS3
}