var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nav1_over = newImage("images/link1On.png");
		nav2_over = newImage("images/link2On.png");
		nav3_over = newImage("images/link3On.png");
		nav4_over = newImage("images/link4On.png");
		nav5_over = newImage("images/link5On.png");
		nav6_over = newImage("images/link6On.png");
		nav7_over = newImage("images/link7On.png");
		nav8_over = newImage("images/link8On.png");

		preloadFlag = true;
	}
}