var fenetreImg;

function photo( image, title, width, height) {
  var pwidth = parseInt(width);
  var pheight = parseInt(height);
  if (pwidth>screen.width-60) { pheight = Math.round(pheight*(screen.width-60)/pwidth); pwidth = screen.width-60; } 
  if (pheight>screen.height-80) { pwidth = Math.round(pwidth*(screen.height-80)/pheight); pheight = screen.height-80; }
  var wwidth = 40 + pwidth;
  var wheight = 50 + pheight;
  fenetreImg = window.open('','_blank','menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=yes,copyhistory=no,' + 'width=' + wwidth  + ',height=' + wheight);
  texte = '<' + 'HTML' + '><' + 'HEAD' + '><' + 'TITLE' + '>' + title + '<' + '/TITLE' + '><' + '/HEAD' + '><' + 'BODY' + '>';
  texte += '<' + 'CENTER' + '><' + 'IMG SRC="' + image + '" BORDER=0' + ' TITLE="' + title + '" WIDTH=' + pwidth + ' HEIGHT=' + pheight + '><' + '/CENTER' + '><' + '/BODY' + '><' + '/HTML' + '>';
  fenetreImg.document.write(texte);
  fenetreImg.focus();
  fenetreImg.document.close();
  return;
}