// check version
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){
// preload images
	image1 = new Image();
	image1.src = "pix/mainnav/nav/img1.gif";
	image1on = new Image();
	image1on.src = "pix/mainnav/nav/img1_on.gif";
	image1stay = new Image();
	image1stay.src = "pix/mainnav/nav/img1_on.gif";

	image2 = new Image();
	image2.src = "pix/mainnav/nav/img2.gif";
	image2on = new Image();
	image2on.src = "pix/mainnav/nav/img2_on.gif";
	image2stay = new Image();
	image2stay.src = "pix/mainnav/nav/img2_on.gif";

	image3 = new Image();
	image3.src = "pix/mainnav/nav/img3.gif";
	image3on = new Image();
	image3on.src = "pix/mainnav/nav/img3_on.gif";
	image3stay = new Image();
	image3stay.src = "pix/mainnav/nav/img3_on.gif";

	image4 = new Image();
	image4.src = "pix/mainnav/nav/img4.gif";
	image4on = new Image();
	image4on.src = "pix/mainnav/nav/img4_on.gif";
	image4stay = new Image();
	image4stay.src = "pix/mainnav/nav/img4_on.gif";

	image5 = new Image();
	image5.src = "pix/mainnav/nav/img5.gif";
	image5on = new Image();
	image5on.src = "pix/mainnav/nav/img5_on.gif";
	image5stay = new Image();
	image5stay.src = "pix/mainnav/nav/img5_on.gif";

	image6 = new Image();
	image6.src = "pix/mainnav/nav/img6.gif";
	image6on = new Image();
	image6on.src = "pix/mainnav/nav/img6_on.gif";
	image6stay = new Image();
	image6stay.src = "pix/mainnav/nav/img6_on.gif";
// do the image swap
}
imageStay = ""
function imageon(name){
	if (imageStay != name){
        	document[name].src = eval(name + "on.src");
	}
}
function imageoff(name){
	if (imageStay != name){
        	document[name].src = eval(name + ".src");
	}
}
function on(name){
        if (check == true){
	imageon(name);
	}
}
function off(name){
        if (check == true){
	imageoff(name);
	}
}
function stay(name){
	if (check == true){
	document[name].src = eval(name + "stay.src");
	if (imageStay != name){
		if (imageStay != ""){
			document[imageStay].src = eval(imageStay + ".src");
		}
	}
	imageStay = name
	}
}
// -->