star1Off = new Image();
star1Off.src = "images/red_star.jpg";
star1On = new Image();
star1On.src = "images/yellow_star.jpg";

star2Off = new Image();
star2Off.src = "images/red_star.jpg";
star2On = new Image();
star2On.src = "images/yellow_star.jpg";

star3Off = new Image();
star3Off.src = "images/red_star.jpg";
star3On = new Image();
star3On.src = "images/yellow_star.jpg";

star4Off = new Image();
star4Off.src = "images/red_star.jpg";
star4On = new Image();
star4On.src = "images/yellow_star.jpg";