//preload images
var pics = new Array();
var img = new Array();
for (i = 1; i <= 5; i++) {
	img[i] = "menu" + i + ".png";
}
img[6] = "pic4_1.png";
img[7] = "pic4_2.png";
img[8] = "pic4_3.png";

for (i = 0; i < img.length; i++) {
	pics[i] = new Image();
	pics[i].src = "img/" + img[i];
}