window.moveTo(0,0)
window.resizeTo(screen.width,(screen.height-25))

function popupcentree(page,largeur,hauteur,options)

{
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}