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) {
		navi_03_over = newImage("../navi/navi_pics/navi_03-over.jpg");
		navi_05_over = newImage("../navi/navi_pics/navi_05-over.jpg");
		navi_06_navi_05_over = newImage("../navi/navi_pics/navi_06-navi_05_over.jpg");
		navi_06_navi_07_over = newImage("../navi/navi_pics/navi_06-navi_07_over.jpg");
		navi_07_over = newImage("../navi/navi_pics/navi_07-over.jpg");
		navi_09_over = newImage("navi/navi_pics/navi_09-over.jpg");
		navi_11_over = newImage("navi/navi_pics/navi_11-over.jpg");
		navi_13_over = newImage("navi/navi_pics/navi_13-over.jpg");
		navi_14_navi_13_over = newImage("navi/navi_pics/navi_14-navi_13_over.jpg");
		preloadFlag = true;
	}
}