if (navigator.appVersion.indexOf("2.") != -1) {
	check = false;
}

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

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

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

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

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