NS4 = false;
if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4)) {
	NS4 = true;
}

	link1off = new Image();
	link1off.src = "images/home_on.gif";
	link1on = new Image();
	link1on.src = "images/home_off.gif";

	link2off = new Image();
	link2off.src = "images/about_on.gif";
	link2on = new Image();
	link2on.src = "images/about_off.gif";

	link3off = new Image();
	link3off.src = "images/search_on.gif";
	link3on = new Image();
	link3on.src = "images/search_off.gif";

	link4off = new Image();
	link4off.src = "images/clients_on.gif";
	link4on = new Image();
	link4on.src = "images/clients_off.gif";

	link5off = new Image();
	link5off.src = "images/resources_on.gif";
	link5on = new Image();
	link5on.src = "images/resources_off.gif";

	link6off = new Image();
	link6off.src = "images/contact_on.gif";
	link6on = new Image();
	link6on.src = "images/contact_off.gif";



function turnon(i, whichLayer) {
	if (NS4 && whichLayer) {
		document.layers[whichLayer].document.images[i].src = eval(i + "on.src");
	} else {
		document.images[i].src = eval(i + "on.src");
	}
}

function turnoff(i, whichLayer) {
	if (NS4 && whichLayer) {
		document.layers[whichLayer].document.images[i].src = eval(i + "off.src");
	} else {
		document.images[i].src = eval(i + "off.src");
	}
}