function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
  }

function setCookie(name, value, expires, path, domain, secure) {
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
  document.cookie = curCookie;
  }

function fixDate(date) {
  var base = new Date(0);
  var skew = base.getTime();
  if (skew > 0)
    date.setTime(date.getTime() - skew);
  }

function bannerkoemau() {
  var jetzt=new Date();
      fixDate(jetzt);
  jetzt.setTime(jetzt.getTime() + 20 * 24 * 60 * 60 * 1000);
  var visits=getCookie("koemautourismus");
  if (!visits) {
    visits = 1; 
    } 
  else {
    visits = parseInt(visits) + 1;
    }
  setCookie("koemautourismus", visits, jetzt);
  //alert(visits%4);
  if((visits%20)==0) {
    setTimeout("info=open(\"http://www.koemau.com/banner.htm\",\"dF\",\"left=20,top=20,pageX=20,pageY=20,width=320,height=250,menubar=no,toolbar=no,location=no\")",1000);
	}
  }
  
  
function init() {
  //bannerkoemau();
  }

init();