Cookies help!

Okay First of all hi everyone from digitalpoint.Next of all I want to know If any of you guys know how to have cookies like Netlog. I'm going to have basically same way. English, Spanish, etc... And when you click on something it takes you the url ex:en.netlog.com. Then If you want to change language you go at the top and click on the languages it resets the cookies and takes you the front page. I'm a newbie at cookies and wondering if any of you guys can help.

 

here is my cookie wrapper:

var Cookie = {
    // wrapper for working with cookies.
    set: function(c_name, value, options) {
        options = (typeof(options) === "undefined") ? {
            duration: null, // in days, if null, session only
            path: null // relative to domain, if null, default from URI
        } : options;

        if (options.duration !== null) {
            var exdate = new Date();
            exdate.setDate(exdate.getDate()+options.duration);
        }

        document.cookie=c_name+ "=" +escape(value)+ ((options.duration===null) ? "" : ";expires="+exdate.toGMTString()) + ((options.path===null) ? "" : ";path="+options.path);
    },
    get: function(c_name) {
        if (document.cookie.length > 0) {
            var c_start = document.cookie.indexOf(c_name + "=");
            if (c_start !== -1) {
                c_start = c_start + c_name.length+1;
                var c_end = document.cookie.indexOf(";",c_start);
                if (c_end === -1)
                    c_end = document.cookie.length;
                return unescape(document.cookie.substring(c_start,c_end));
            }
        }
        return false;
    },
    remove: function(c_name) {
        this.set(c_name, "", {duration: -1, path: "/"});
    }
}; // end Cookie wrapper

PHP:

to use:

// set
Cookie.set("language", "en", {path: "/", duration: 365});

// read it into a var
var language = Cookie.get("language");

// remove it.
Cookie.remove("language");

PHP:

this has been posted before, you should look first before asking.