Cookie Wrapper

cookie.js

  var Cookie = {
    write: function (name,value,days) {
           if (days) {
             var date = new Date();
             date.setTime(date.getTime()+(days*24*60*60*1000));
             var expires = "; expires="+date.toGMTString();
           }
           else var expires = "";
           document.cookie = name+"="+escape(value)+expires+"; path=/";
          },
    read: function (name) {
            var nameEQ = name + "=";
            var ca = document.cookie.split(';');
            for(var i=0;i < ca.length;i++) {
              var c = ca[i];
              c = c.replace(/^\s+/, '');
              if (c.indexOf(nameEQ) == 0) return unescape(c.substring(nameEQ.length,c.length));
            }
            return null;
          },
    erase: function(name){
      Cookie.write(name, "", -1);
    }
  };