// Vous pouvez changer la vitesse (speed)
var speed = 20;
var timer = 0;

function preload()
{
 if (document.getElementById)
 {
 document.getElementById('preloadIMG').style.visibility='hidden';
 opacity('preloader',100,0);
 }

 else
 {
 if (document.layers)
 {
 document.preloadIMG.visibility = 'hidden';
 opacity('preloader',100,0);
 }
 else
 {
 document.all.preloadIMG.style.visibility = 'hidden';
 opacity('preloader',100,0);
 }
 }
}

function opacity(id, opacityStart, opacityEnd)
{
 for(i = opacityStart; i >= opacityEnd; i--)
 {
 setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
 timer++;
 }
}

// Change l'opacité des fifférents navigateur
function changeOpac(opacity, id) {
 var object = document.getElementById(id).style;
 object.opacity = (opacity / 100);
 object.MozOpacity = (opacity / 100);
 object.KhtmlOpacity = (opacity / 100);
 object.filter = "alpha(opacity=" + opacity + ")";

 if (opacity == 0)
 {
 document.getElementById('preloader').style.visibility='hidden';
 }
}

window.onload = function() { preload();}

window.document.write("<style type=\"text/css\">#preloader { display: block !important; }</style>");