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) {
	nav_home_over = newImage("images/nav_home_over.jpg");
	nav_indv_over = newImage("images/nav_indv_over.jpg");
	nav_orgs_over = newImage("images/nav_orgs_over.jpg");
	nav_cons_over = newImage("images/nav_cons_over.jpg");
	nav_cash_over = newImage("images/nav_cash_over.jpg");
	nav_contact_over = newImage("images/nav_contact_over.jpg");
	nav_indvquiz_over = newImage("images/nav_indvquiz_over.jpg");
	nav_indvstuf_over = newImage("images/nav_indvstuf_over.jpg");
	nav_indvwork_over = newImage("images/nav_indvwork_over.jpg");
	preloadFlag = true;
	}
}