<!--JavaScript créé par-->
<!--Reant.net-->
function changeBackground() {
  var variable = Math.floor(Math.random()*4);
  var srcImage;
  if (variable==0) {
    srcImage = '/images/fond1.jpg';
  } else if (variable==1) {
    srcImage = '/images/fond2.jpg';
  } else if (variable==2) {
    srcImage = '/images/fond3.jpg';
  } else {
    srcImage = '/images/fond4.gif';
  }
  document.body.style.backgroundImage = "url(" + srcImage + ")";
}