var win;
var largeur_popup=362;
var hauteur_popup=500;
var L = (screen.width - largeur_popup) / 3;
var H = (screen.height - hauteur_popup) / 3;

function closeDep() {
  if (win && win.open && !win.closed) win.close();
}

function p1g()
{
  if (win && win.open && !win.closed) win.close();
  win = window.open('photo/musee1.htm','win','height=388,width=550,top='+H+',left='+L);
}
function p2g()
{
  if (win && win.open && !win.closed) win.close();
  win = window.open('photo/musee2.htm','win','height=350,width=750,top='+H+',left='+L);
}
function p3g()
{
  if (win && win.open && !win.closed) win.close();
  win = window.open('photo/musee3.htm','win','height=388,width=550,top='+H+',left='+L);
}