Javascript cookie extractor

cookie.js

function getCookie(name) {
    var value, s;
    var cookies = document.cookie;
    var p = /(\S+?)\s*=\s*("[^"]*"\s*|[^;]*);*?/g;

    while ((s = p.exec(cookies)) != null) {
        if (s[1].replace(/^\s+|\s+$/g, "") == name)
            value = s[2].replace(/^\s+|\s+$/g, "");
    }

    return value;
}