function loadImages() {
if (document.getElementById) {  // DOM3 = IE5, NS6
document.getElementById('hidepage').style.display = 'none';
}
else {
if (document.layers) {  // Netscape 4
document.hidepage.visibility = 'hidden';
}
else {  // IE 4
document.all.hidepage.style.visibility = 'hidden';
      }
   }
}

image1 = new Image();
  image1.src = "bouton_enfonce.png";