bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
if (bName == "Netscape" && bVer >= 4) ver = "n4";
else if (bName == "Netscape" && bVer == 3) ver = "n3"; 
else if (bName == "Netscape" && bVer == 2) ver = "n2"; 
else if (bName == "Microsoft Internet Explorer" && bVer <= 3) ver = "e3";
else if (bName == "Microsoft Internet Explorer" && bVer >= 4) ver = "e4";

if ((ver == "n3") || (ver == "n4") || (ver == "e4")) {
imgok = 1;
} else {
imgok = 0;
} 

rok = false;

if (bName == "Netscape" || bName =="Microsoft Internet Explorer") {
	if (bVer >= 4) {
		rok = true;
	}
}

if (rok) {
	imagen = new Array(32);
	for (i = 0; i < 30; i++) {
		imagen[i] = new Image();
	}
	imagen[0].src = "../imagenes/menucosmet.gif";
	imagen[1].src = "../imagenes/menucosmet_on.gif";
	
	
}

function display(num) {
	if (rok) {
		if (num == 0) document.img1.src = imagen[0].src;
		if (num == 1) document.img1.src = imagen[1].src;
		

	}
}