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) {
		nCur_over = newImage("images/index/nCur2.gif");
		nPas_over = newImage("images/index/nPas2.gif");
		nEdi_over = newImage("images/index/nEdi2.gif");
		nIns_over = newImage("images/index/nIns2.gif");
		nPub_over = newImage("images/index/nPub2.gif");
		nSub_over = newImage("images/index/nSub2.gif");
		nCon_over = newImage("images/index/nCon2.gif");
		nManuscriptSubm_over = newImage("images/index/nnManuscriptSubm2.gif");
		nCopyr_over = newImage("images/index/nCopyr2.gif");
		nHom_over = newImage("images/index/nHom2.gif");
		preloadFlag = true;
	}
}