Get/set cookies

cookies.js

var cookies = {
    setItem: function(name, value, days) {
        var date = new Date();
        date.setDate(date.getDate() + days);
        var cookieValue = escape(value) + ((days === null) ? '' : '; expires=' + date.toUTCString());
        document.cookie = name + '=' + cookieValue;
    },
    getItem: function(name) {
        var i, key, value, cookieList = document.cookie.split(';'), item, splitIndex;
        for (i = 0; i < cookieList.length; i++) {
            item = cookieList[i];
            splitIndex = item.indexOf('=');
            key = item.substr(0, splitIndex);
            value = item.substr(splitIndex + 1);
            key = key.replace(/^\s+|\s+$/g, '');
            if (key === name) {
                return unescape(value);
            }
        }
    }
};