function showPicture(picture){
  var winShowPicture;
  winShowPicture = open('./_includes/showPicture.php?picture_src=' + picture.src + '&picture_alt=' + picture.alt,'ShowPicture','toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=0,resizable=0,width=' + picture.width + ',height=' + picture.height);
  winShowPicture.focus();
}