Javascript: Cookies

<script type="text/javascript" type="javascript">
   function CookieHandler() {

     this.setCookie = function(name, value, seconds) {
       if (typeof (seconds) != 'undefined') {
         var date = new Date();
         date.setTime(date.getTime() + (seconds * 1000));
         var expires = "; expires=" + date.toGMTString();
       }
       else {
         var expires = "";
       }
       document.cookie = name + "=" + value + expires + "; path=/";
     }

     this.getCookie = function(name) {
       name = name + "=";
       var carray = document.cookie.split(';');

       for (var i = 0; i < carray.length; i++) {
         var c = carray[i];
         while (c.charAt(0) == ' ') c = c.substring(1, c.length);
         if (c.indexOf(name) == 0) return c.substring(name.length, c.length);
       }
       return null;
     }

     this.deleteCookie = function(name) {
       this.setCookie(name, "", -1);
     }
   }
   var Cookies = new CookieHandler();
   var counter = Cookies.getCookie('counter'); // get cookie 'name'
   if (typeof (counter) == 'undefined') counter = 0;
   Cookies.setCookie('counter', ++counter, 365 * 60 * 60); // set cookie 'counter' for 1 year
</script>