//preload rollover images
if (document.images) {
	gallery = new Image(138,11); 
	gallery.src="images/nav_gallery_green.jpg";
	vortex = new Image(138,11); 
	vortex.src="images/nav_vortex_green.jpg";
	collage = new Image(138,11); 
	collage.src="images/nav_collage_green.jpg";
	color = new Image(138,11); 
	color.src="images/nav_color_green.jpg";
	still = new Image(138,11); 
	still.src="images/nav_still_green.jpg";
	places = new Image(138,11); 
	places.src="images/nav_places_green.jpg";
	about = new Image(138,11); 
	about.src="images/nav_about_green.jpg";
	contact = new Image(138,11); 
	contact.src="images/nav_contact_green.jpg";
	
}