<!--

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_04_over = newImage("images/nav_04_over.gif");
		nav_04_down = newImage("images/nav_04_down.gif");
		nav_08_over = newImage("images/nav_08_over.gif");
		nav_08_down = newImage("images/nav_08_down.gif");
		nav_12_over = newImage("images/nav_12_over.gif");
		nav_12_down = newImage("images/nav_12_down.gif");
		nav_16_over = newImage("images/nav_16_over.gif");
		nav_16_down = newImage("images/nav_16_down.gif");
		nav_20_over = newImage("images/nav_20_over.gif");
		nav_20_down = newImage("images/nav_20_down.gif");

		preloadFlag = true;
	}
}

// -->