function setCookie(name, wert, domain, expireDayDelta, path, secure){
   var cook = name+"="+unescape(wert);
   
   cook += (domain) ? "; domain="+ domain : "";
   if( expireDayDelta )
   {
     var expires = new Date();
     var inDeltaDays = expires.getTime() + (expireDayDelta * 24 * 60 * 60 * 1000);
     expires.setTime(inDeltaDays);
     cook += "; expires="+expires ;
   }
   cook += (path) ? "; path="+path : "";
   cook += (secure) ? "; secure" : "";
   document.cookie = cook;
}

function getCookie(name){
   var i=0  //Suchposition im Cookie
   var suche = name+"=";
   while (i<document.cookie.length){
      if (document.cookie.substring(i, i+suche.length)==suche){
         var ende = document.cookie.indexOf(";", i+suche.length);
         ende = (ende>-1) ? ende : document.cookie.length;
         var cook = document.cookie.substring(i+suche.length, ende);
         return unescape(cook);
      }
      i++;
   }
   return null;
}

function eraseCookie(name, domain, path){
   var cook="name=; expires=Thu, 01-Jan-70 00:00:01 GMT"
   cook += (domain) ? "domain="+domain : ""
   cook += (path) ? "path="+path : ""
   document.cookie = cook
}