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) {
		Left_Nav_01_over = newImage("/images/nav_v1/01-over.gif");
		Left_Nav_02_over = newImage("/images/nav_v1/02-over.gif");
		Left_Nav_03_over = newImage("/images/nav_v1/03-over.gif");
		Left_Nav_04_over = newImage("/images/nav_v1/04-over.gif");
		Left_Nav_05_over = newImage("/images/nav_v1/05-over.gif");
		Left_Nav_06_over = newImage("/images/nav_v1/06-over.gif");
		Left_Nav_07_over = newImage("/images/nav_v1/07-over.gif");
		Left_Nav_08_over = newImage("/images/nav_v1/08-over.gif");
		Left_Nav_09_over = newImage("/images/nav_v1/09-over.gif");
		Left_Nav_10_over = newImage("/images/nav_v1/10-over.gif");
		preloadFlag = true;
	}
}