//http://www.phpjs.org

function urlencode (str) {
    return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').
                                                                    replace(/\)/g, '%29').replace(/\*/g, '%2A').replace(/%20/g, '+');
}
function urldecode (str) {
    return decodeURIComponent(str).replace(/\+/g, ' ');
}