function setCookie(wert,path){
   var cook = unescape(wert)+"; path="+path+"";
   document.cookie = cook;
}

var tmp = document.referrer;
if(tmp.lenght != 0){
  var yah = tmp.search(/yahoo.+/);
  if (yah!= -1){
    var part1 = ref.split("p=");
    if(part1.length > 1){
      var tmp2 = part1[1];
      var tmp3 = tmp2.split("&");
      var key = "Yahoo: " + tmp3[0];
      setCookie(key,"/");
    }
  }
  else {
    var ref = document.referrer;
    var part1 = ref.split("q=");
    if(part1.length > 1){
      var tmp2 = part1[1];
      var tmp3 = tmp2.split("&");
      var key ="Google: " + tmp3[0];
      setCookie(key,"/");
    }
  }
}