// JavaScript Document
var ua = navigator.userAgent.toLowerCase();
var os,browser,version,data;
if (detect('konqueror')) {browser = "Konqueror"; os = "Linux";}
else if (detect('safari')) browser = "Safari";
else if (detect('firefox')) browser = "Firefox";
else if (!detect('compatible')) {browser = "Netscape Navigator"; version = ua.charAt(8);}
else browser = "An unknown browser";
if (!version) version = ua.charAt(stringposition + data.length);
function detect(text) {
   stringposition = ua.indexOf(text) + 1;
   data = text;
   return stringposition;
   }

function back_movie()
	{
	if (browser == "Safari") {window.document.write ("<a href='javascript:history.go(-2)'>zur&uuml;ck</a>");}
	else if (browser == "Konqueror") {window.document.write ("<a href='javascript:history.go(-2)'>zur&uuml;ck</a>");}
	else {window.document.write ("<a href='javascript:history.back()'>zur&uuml;ck</a>");}
	}