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) {

		mcf_04_over = newImage("nav/mcf_04-over.gif");

		mcf_05_over = newImage("nav/mcf_05-over.gif");

		mcf_06_over = newImage("nav/mcf_06-over.gif");

		mcf_07_over = newImage("nav/mcf_07-over.gif");

		mcf_08_over = newImage("nav/mcf_08-over.gif");

		mcf_09_over = newImage("nav/mcf_09-over.gif");

		preloadFlag = true;

	}

}