Kod:

<SCRIPT LANGUAGE="JavaScript">
 <!--
 function GetCookie(name) {
   var arg=name+"=";
   var alen=arg.length;
   var clen=document.cookie.length;
   var i=0;
   while (i<clen) {
     var j=i+alen;
     if 
(document.cookie.substring(i,j)==arg)
       return "here";
     i=document.cookie.indexOf(" ",i)+1;
     if (i==0) break;
   }
   return null;
 }
 var visit=GetCookie("shant");
 if (visit==null){
    alert("Hoşgeldiniz...");
    var expire=new Date();
    expire=new 
Date(expire.getTime()+7776000000);
    document.cookie="shant=here; expires="+expire;
 }
 // -->
 </SCRIPT>