if (document.images)	{
	nhome = new Image();			nhome.src = "images/nhome.gif";
	nhomeo = new Image();			nhomeo.src = "images/nhomeo.gif";
	nservices = new Image();		nservices.src = "images/nservices.gif";
	nserviceso = new Image();		nserviceso.src = "images/nserviceso.gif";
	nportfolio = new Image();		nportfolio.src = "images/nportfolio.gif";
	nportfolioo = new Image();		nportfolioo.src = "images/nportfolioo.gif";
	nabout = new Image();			nabout.src = "images/nabout.gif";
	nabouto = new Image();			nabouto.src = "images/nabouto.gif";
	ncontact = new Image();			ncontact.src = "images/ncontact.gif";
	ncontacto = new Image();		ncontacto.src = "images/ncontacto.gif";

//just wanted to preload this image
	bar3bgdk = new Image();			bar3bgdk.src = "images/bar3bgdk.gif";

}

function imgOn(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + "o.src");
    }
}

function imgOff(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + ".src");
    }
}