var ckTemp = document.cookie;

function setCookie(name, value) { 
 if (value != null && value != "")
  document.cookie=name + "=" + escape(value) + ";";
 ckTemp = document.cookie;
 }
  
function getCookie(name) { 
 var index = ckTemp.indexOf(name + "=");
 if(index == -1) return null;
  index = ckTemp.indexOf("=", index) + 1;
 var endstr = ckTemp.indexOf(";", index);
 if (endstr == -1) endstr = ckTemp.length;
 return unescape(ckTemp.substring(index, endstr));
 }
  
function checkCookie() {
 var temp = getCookie("popup");
 if(!temp==1) {
  setCookie("popup",1);
  window.open('http://www.sextipps24.de/exit_nl.html','pop1','directories=no,scrollbars=no,width=520,height=175,left=1,top=1')
   }
}