for (i = 1; i <= 7; i++) {
  img = new Image;
  img.src = ("/images/menu_" + i + "a.gif");
}

Menu = {
  hover: function (el) {
    el.src = "/images/" + el.id + "a.gif";
  },
  unhover: function (el) {
    el.src = "/images/" + el.id + ".gif";  
  }
}

Gallery = {
  open: function (href) {
    window.open (href, 'galleryImage', 'width=600,height=400,top=10,left=150'); 
    return false;
  }
}