function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/menu-home-over.gif");
		tigers_over = newImage("images/menu-tigers-over.gif");
		wolves_over = newImage("images/menu-wolves-over.gif");
		bears_over = newImage("images/menu-bears-over.gif");
		weblos1_over = newImage("images/menu-weblos1-over.gif");
		weblos2_over = newImage("images/menu-weblos2-over.gif");
		guidebook_over = newImage("images/download-guidebook-over.gif");
		newsletter_over = newImage("images/newsletter-button-over.gif");
		preloadFlag = true;
	}
}

function genOver(button,image) {
		button.src = image;
}

function genOut(button,image) {
		button.src = image;
}