function getCookie(name) {
  var re = new RegExp(name + "=([^;]+)");
  var value = re.exec(document.cookie);
  return (value != null) ? unescape(value[1]) : null;
}
var today = new Date();
var expiry = new Date(today.getTime() + 1 * 24 * 60 * 60 * 1000); 

function setCookie(name, value) {
  document.cookie=name + "=" + escape(value) + "; expires=" + expiry.toGMTString() + "; path=/";
}
  
if(window.top == window.self){
  setCookie('body_url',window.location);
  window.location = 'http://www.nooduitgang.nl';
  //window.location = body_url;
}
/*
In de head van frameset
<script language="JavaScript1.2">
<!--
  function getCookie(name) {
    var re = new RegExp(name + "=([^;]+)");
    var value = re.exec(document.cookie);
    return (value != null) ? unescape(value[1]) : null;
  }
  var today = new Date();
  var expiry = new Date(today.getTime() + 28 * 24 * 60 * 60 * 1000); 
  
  function setCookie(name, value) {
    document.cookie=name + "=" + escape(value) + "; expires=" + expiry.toGMTString() + "; path=/";
  }

  function checkpage(){
    bla = getCookie('body_url');
    if(bla && bla!='no')
    {
      parent.body.location.href = bla;
      setCookie('body_url','no');
    }
  }
//-->
</script>

En in de 1e frameset tag.
<frameset ??? onLoad="checkpage();"> 

*/