if (navigator.appVersion.indexOf("2.") != -1){
        check = false;
        }
if ((navigator.appVersion.indexOf("3.") != -1) && (navigator.appName.indexOf("Explorer") != -1)){
        check = false;
        }
else {
        check = true;
        }

if (check == true){
	image1= new Image();
	image1.src = "images/navmenu_home.gif";
	image1on = new Image();
	image1on.src = "images/navmenu_home_on.gif";

	image2= new Image();
	image2.src = "images/navmenu_about.gif";
	image2on = new Image();
	image2on.src = "images/navmenu_about_on.gif";

	image3= new Image();
	image3.src = "images/navmenu_order.gif";
	image3on = new Image();
	image3on.src = "images/navmenu_order_on.gif";

	image4= new Image();
	image4.src = "images/navmenu_contact.gif";
	image4on = new Image();
	image4on.src = "images/navmenu_contact_on.gif";
}

function imageon(name)   {
        document[name].src = eval(name + "on.src");
}
function imageoff(name)  {
        document[name].src = eval(name + ".src");
}
NN3 = true;

function on(name)  {
	if (check == true){
		imageon(name);
	}
}
function off(name)  {
        if (check == true){
		imageoff(name);
	}
}