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) {
		nProf2 = newImage("images/navi/nProf2.gif");
		nProf_nCont2 = newImage("images/navi/nProf-nCont2.gif");
		nProd_nPese2 = newImage("images/navi/nProd-nPese2.gif");
		nProd_nCont2 = newImage("images/navi/nProd-nCont2.gif");
		nPese2 = newImage("images/navi/nPese2.gif");
		nPese_nCont2 = newImage("images/navi/nPese-nCont2.gif");
		nPLeadfree2 = newImage("images/navi/nPLeadfree2.gif");
		nPnormal2 = newImage("images/navi/nPnormal2.gif");
		nPflux2 = newImage("images/navi/nPflux2.gif");
		nPink2 = newImage("images/navi/nPink2.gif");
		nSpec2 = newImage("images/navi/nSpec2.gif");
		nServ2 = newImage("images/navi/nServ2.gif");
		nServ_nCont2 = newImage("images/navi/nServ-nCont2.gif");
		nNews2 = newImage("images/navi/nNews2.gif");
		nNews_nCont2 = newImage("images/navi/nNews-nCont2.gif");
		nNet2 = newImage("images/navi/nNet2.gif");
		nNet_nCont2 = newImage("images/navi/nNet-nCont2.gif");
		nCont2 = newImage("images/navi/nCont2.gif");
		nHome_nCont2 = newImage("images/navi/nHome2.gif");
		preloadFlag = true;
	}
}