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) {
		new_nav_bar_02_new_nav_bar_03_over = newImage("images/new_nav_bar_02-new_nav_bar_.gif");
		new_nav_bar_03_over = newImage("images/new_nav_bar_03-over.gif");
		new_nav_bar_05_over = newImage("images/new_nav_bar_05-over.gif");
		new_nav_bar_07_over = newImage("images/new_nav_bar_07-over.gif");
		new_nav_bar_09_over = newImage("images/new_nav_bar_09-over.gif");
		risk1_01_over = newImage("images/risk1_01-over.gif");
		risk2_01_over = newImage("images/risk2_01-over.gif");
		risk3_01_over = newImage("images/risk3_01-over.gif");
		risk4_01_over = newImage("images/risk4_01-over.gif");
		preloadFlag = true;
	}
}