var agent = navigator.userAgent;
var nv = 0;
if(agent.indexOf("Mozilla/2") == 0){var nv = 1}
if(nv != 1){
<!--m01-->
        m01on = new Image();
        m01on.src = "http://rs.e-royce.com/map/images/nav_01_up.gif";
        m01off = new Image();
        m01off.src = "http://rs.e-royce.com/map/images/nav_01.gif";
<!--m02-->
        m02on = new Image();
        m02on.src = "http://rs.e-royce.com/map/images/nav_02_up.gif";
        m02off = new Image();
        m02off.src = "http://rs.e-royce.com/map/images/nav_02.gif";
}

function img_act(imgName){
if(nv != 1){
	imgOn = eval(imgName + "on.src");
	document[imgName].src = imgOn;
	}
}

function img_inact(imgName){
if(nv != 1){
	imgOff = eval(imgName + "off.src");
	document [imgName].src = imgOff;
	}
}