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) {
		mcnav_02_over = newImage("../nav/mcnav_02-over.gif");
		mcnav_03_over = newImage("../nav/mcnav_03-over.gif");
		mcnav_04_over = newImage("../nav/mcnav_04-over.gif");
		mcnav_05_over = newImage("../nav/mcnav_05-over.gif");
		mcnav_06_over = newImage("../nav/mcnav_06-over.gif");
		mcnav_07_over = newImage("../nav/mcnav_07-over.gif");
		mcnav_09_over = newImage("../nav/mcnav_09-over.gif");
		mcnav_10_over = newImage("../nav/mcnav_10-over.gif");
		mcnav_11_over = newImage("../nav/mcnav_11-over.gif");
		preloadFlag = true;
	}
}