function selectImages() {
	
		// define image arrays
		var bgImages = new Array();
		bgImages[0] = "images/landing/launch_am_desert_bg.gif";
		bgImages[1] = "images/landing/launch_aquatic_bg.gif";
		bgImages[2] = "images/landing/launch_conservatory_bg.gif";
		bgImages[3] = "images/landing/launch_palm_bg.gif";
		bgImages[4] = "images/landing/launch_rainforest_bg.gif";
		bgImages[5] = "images/landing/launch_upland_bg.gif";
		
		var bannerImages = new Array();
		bannerImages[0] = "images/landing/launch_am_desert_color.jpg";
		bannerImages[1] = "images/landing/launch_aquatic_color.jpg";
		bannerImages[2] = "images/landing/launch_conservatory_color.jpg";
		bannerImages[3] = "images/landing/launch_palm_color.jpg";
		bannerImages[4] = "images/landing/launch_rainforest_color.jpg";
		bannerImages[5] = "images/landing/launch_upland_color.jpg";
		
		var rnd = Math.floor(Math.random()*bannerImages.length);
		
		var bgImg = bgImages[rnd];
		var bannerImg = bannerImages[rnd];
		
		// load images into divs
		document.getElementById("bgHolder").style.background = "url('"+bgImg+"')";
		document.getElementById("bannerImg").style.background = "url('"+bannerImg+"')";
		document.getElementById("bgHolder").style.backgroundRepeat = "no-repeat";
		
		// add footer with current year
		var d = new Date();
		var y = d.getFullYear();
		document.getElementById("footer").innerHTML = "Plant Hunters ©" + y + "The New York Botanical Garden";
	}