function In(n) {
	browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )));
	if (browser) {
		document.images["image" + n ].src = "images/menu_on_" + n + ".gif";
	}
}
function Out(n) {
	browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )));
	if (browser) {
		document.images["image" + n ].src = "images/menu_off_" + n + ".gif";
	}
}
function preload(n) {
	var ar = new Array();
	for (var i = 0; i <= n; i++) {
		ar[i] = new Image();
		ar[i].src = 'images/menu_on_' + i + '.gif';
	}
}