function es_onload(pg) {
	if (document.images) {
		preload_image_object = new Image();
		  
		image_url = new Array();
		image_url.push("logo.png");
		image_url.push("page-bg.jpg");
		image_url.push("bottom-menu/bottom-menu-bg.png");
		image_url.push("bottom-menu/elevation-buzz.png");
		image_url.push("bottom-menu/join-our-mailing-list.png");
		image_url.push("bottom-menu/schedule-and-sign-up.png");
		image_url.push("bottom-menu/elevation-buzz-o.png");
		image_url.push("bottom-menu/join-our-mailing-list-o.png");
		image_url.push("bottom-menu/schedule-and-sign-up-o.png");
		image_url.push("main-menu/home.png");
		image_url.push("main-menu/about.png");
		image_url.push("main-menu/adventures.png");
		image_url.push("main-menu/bios.png");
		image_url.push("main-menu/contact.png");
		image_url.push("main-menu/testimonials.png");
		image_url.push("main-menu/home-o.png");
		image_url.push("main-menu/about-o.png");
		image_url.push("main-menu/adventures-o.png");
		image_url.push("main-menu/bios-o.png");
		image_url.push("main-menu/contact-o.png");
		image_url.push("main-menu/testimonials-o.png");

		switch(pg) {
			case "home":	
				image_url.push("home/slides/1.jpg");
				image_url.push("home/slides/2.jpg");
				image_url.push("home/slides/3.jpg");
				image_url.push("home/slides/4.jpg");
				break;
				
			case "about":
				image_url.push("about/slides/1.jpg");
				image_url.push("about/slides/2.jpg");
				image_url.push("about/slides/3.jpg");
				image_url.push("about/slides/4.jpg");
				break;
			
		}
		
		

		var i = 0;
		for (i=0; i < image_url.length; i++) {
			 preload_image_object.src = "http://www.elevationspin.com/wp-content/themes/elevationspin/images/" + image_url[i];
		}
	}
}