function ant_preload_images(a){
         // imgHeaderObjects est une variable globale
         var imgNames=a;
         for (var i = 0; i < imgNames.length; i++)
         {
          imgHeaderObjects[i] = new Image();
          imgHeaderObjects[i].src = 'images/' + imgNames[i];
          }
         }

function ant_nextHeader_img(Occ,TimeOut)
{
        var nextit=Occ;

        if (document.getElementById("headerImg")){
                monObj = document.getElementById("headerImg");
                monObj.src = imgHeaderObjects[nextit].src;
                //alert (imgObjects[nextit].src);
                }

        if (Occ == (imgHeaderObjects.length -1)) {
                var NextPos=0;
                }
        else {
                var NextPos=Occ+1;
                }

        self.setTimeout('ant_nextHeader_img('+NextPos+','+TimeOut+')',TimeOut);
      }