var isNav = false;
var isIE = false;
var isWin = false;
var isMac = false;

function init(){
	initbrowser();
	initsystem();
}

function initbrowser() {
// Browser bestimmen
	if ((navigator.appName.indexOf("Netscape") != -1) && (parseInt(navigator.appVersion) < 5)) {
		isNav = true;
	}
	else {
		isIE = true;
	}
}

function initsystem() {
// Betriebssytem bestimmen
	if (navigator.platform.indexOf("Win") != -1) {
		isWin = true;
	}
	else {
		isMac = true;
	}
}