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) {
		methodN_over = newImage("images/global_nav/methodN_over.gif");
		programsN_over = newImage("images/global_nav/programsN_over.gif");
		aboutN_over = newImage("images/global_nav/aboutN_over.gif");
		resourcesN_over = newImage("images/global_nav/resourcesN_over.gif");
		startN_over = newImage("images/global_nav/startN_over.gif");
		loginN_over = newImage("images/global_nav/loginN_over.gif");
		logout_over = newImage("images/global_nav/logout_over.gif");
		attend_over = newImage("images/global_nav/attend_over.gif");
		report_over = newImage("images/global_nav/report_over.gif");
		preloadFlag = true;
	}
}

;