// JavaScript Document

img_off = new Array();
	img_over = new Array();
	img_extensions = new Array("book", "author", "excerpt", "video", "events", "praise", "bookclubs", "cityreads");
	for (a = 0; a < img_extensions.length; a++) {
		img_off[a] = new Image();
		img_off[a].src = "images/main_nav_" + img_extensions[a] + ".jpg";
		img_over[a] = new Image();
		img_over[a].src = "images/main_nav_" + img_extensions[a] + "_over.jpg";
	}
	img_off[10] = new Image();
	img_over[10] = new Image();
	img_over[10].src = "images/main_buy_amazon_over.jpg";
	img_off[10].src = "images/main_buy_amazon.jpg";
	
	img_off[11] = new Image();
	img_over[11] = new Image();
	img_over[11].src = "images/main_buy_bn_over.jpg";
	img_off[11].src = "images/main_buy_bn.jpg";
	
	img_off[12] = new Image();
	img_over[12] = new Image();
	img_over[12].src = "images/main_buy_borders_over.jpg";
	img_off[12].src = "images/main_buy_borders.jpg";
	
	img_off[13] = new Image();
	img_over[13] = new Image();
	img_over[13].src = "images/main_buy_booksense_over.jpg";
	img_off[13].src = "images/main_buy_booksense.jpg";
	
function do_over(x) {
	var r = document.getElementById("nav" + x);
	r.src = img_over[x].src;
}
function do_out(x) {
	var r = document.getElementById("nav" + x);
	r.src = img_off[x].src;
}