<!--
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_nav_master_over = newImage("images/home_nav-over.gif");	
		galaxies_nav_over = newImage("images/galaxies_nav-over.gif");
		nebulae_nav_over = newImage("images/nebulae_nav-over.gif");
		clusters_nav_over = newImage("images/clusters_nav-over.gif");	
		solarsystem_nav_over = newImage("images/solarsystem_nav-over.gif");
		equipment_nav_over = newImage("images/equipment_nav-over.gif");
		observatory_nav_over = newImage("images/observatory_nav-over.gif");
		links_nav_over = newImage("images/links_nav-over.gif");
		about_nav_over = newImage("images/about_nav-over.gif");
		preloadFlag = true;
	}
}
// -->