// JavaScript Document
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) {
		dnav_01_over = newImage("images/dnav_01-over.gif");
		dnav_05_over = newImage("images/dnav_05-over.gif");
		dnav_06_over = newImage("images/dnav_06-over.gif");
		dnav_07_over = newImage("images/dnav_07-over.gif");
		dnav_08_over = newImage("images/dnav_08-over.gif");
		dnav_11_over = newImage("images/dnav_11-over.gif");
		dnav_12_over = newImage("images/dnav_12-over.gif");
		dnav_13_over = newImage("images/dnav_13-over.gif");
		dnav_14_over = newImage("images/dnav_14-over.gif");
		dnav_15_over = newImage("images/dnav_15-over.gif");
		dnav_16_over = newImage("images/dnav_16-over.gif");
		dnav_18_over = newImage("images/dnav_18-over.gif");
		dnav_20_over = newImage("images/dnav_20-over.gif");
		dnav_22_over = newImage("images/dnav_22-over.gif");
		preloadFlag = true;
	}
}