//preload images into cache
function preloadImages()
{
img1 = new Image();
img2 = new Image();
img3 = new Image();
img4 = new Image();
img5 = new Image();
img6 = new Image();
img7 = new Image();
img8 = new Image();
img9 = new Image();
img10 = new Image();

img1.src = "images/1.jpg";
img2.src = "images/2.jpg";
img3.src = "images/3.jpg";
img4.src = "images/4.jpg";
img5.src = "images/5.jpg";
img6.src = "images/6.jpg";
img7.src = "images/7.jpg";
img8.src = "images/8.jpg";
img9.src = "images/9.jpg";
img10.src = "images/10.jpg";
}