if (document.images) {
	img_default = new Image();
	img_default.src = "./images/tier_nav/default.gif";
	
	img_home = new Image();
	img_home.src = "./images/tier_nav/home.gif";
	
	img_contactinfo = new Image();
	img_contactinfo.src = "./images/tier_nav/contactinfo.gif";

	img_looklistenbuy = new Image();
	img_looklistenbuy.src = "./images/tier_nav/looklistenbuy.gif";

	img_lyrics = new Image();
	img_lyrics.src = "./images/tier_nav/lyrics.gif";

	img_myrecommends = new Image();
	img_myrecommends.src = "./images/tier_nav/myrecommends.gif";

	img_ontheroad = new Image();
	img_ontheroad.src = "./images/tier_nav/ontheroad.gif";

	img_presentandpast = new Image();
	img_presentandpast.src = "./images/tier_nav/presentandpast.gif";  
 }