var speed = 10;
var transition = 10;

// Dimensions du preloader en GIF anime'
var GIFpreloadLargeur = 20;
var GIFpreloadHauteur = 20;

var timer= 0;
var opaciT = 100;

function opacity()
{
    opaciT = opaciT - transition;

    var object = document.getElementById("preloader").style;
    object.opacity = (opaciT / 100);
    object.MozOpacity = (opaciT / 100);
    object.KhtmlOpacity = (opaciT / 100);
    object.filter = "alpha(opacity=" + opaciT + ")";
     
     if (opaciT <= 0)
     {
          document.getElementById("preloader").style.visibility="hidden";
          clearInterval(timer);
     }

}
 
function preload()
{
     if (document.getElementById)
     {
          document.getElementById("preloadIMG").style.visibility="hidden";
          timer = setInterval("opacity()",speed);
     }
     
     else
     {
          if (document.layers)
          {   
               document.preloadIMG.visibility = "hidden";
               timer = setInterval("opacity()",speed);
         }
             else
          {
               document.all.preloadIMG.style.visibility = "hidden";
               timer = setInterval("opacity()",speed);
          }
     }
}

var myCSS;
myCSS = "<style type=\"text/css\">";

myCSS += "html, body { height:auto; margin:0px; padding:0px;}";

myCSS += "#preloader {";
myCSS += "position:fixed;";
myCSS += "background-color:white;";
myCSS += "width:100%;";
myCSS += "height:100%; ";
myCSS += "display:block;";
myCSS += "z-index:100000;";
myCSS += "}";

myCSS += "#preloadIMG {";
myCSS += "position:absolute;";
myCSS += "left:50%;";
myCSS += "width:" + GIFpreloadLargeur + "px;";
myCSS += "height:" + GIFpreloadHauteur + "px;";
myCSS += "margin-left:-" + (GIFpreloadLargeur / 2) + "px;";
myCSS += "top:350px;";
myCSS += "}";

myCSS += "</style>";

window.document.write(myCSS);

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