img = new Image;
img.src = "images/but1_1.jpg";
img = new Image;
img.src = "images/but2_1.jpg";
img = new Image;
img.src = "images/but3_1.jpg";
img = new Image;
img.src = "images/but4_1.jpg";
img = new Image;
img.src = "images/but5_1.jpg";