URL Encode/Decode

gistfile1.js

$.extend({
    URLEncode: function (c) {
        var o = '';
        var x = 0;
        c = c.toString();
        var r = /(^[a-zA-Z0-9_.]*)/;
        while (x < c.length) {
            var m = r.exec(c.substr(x));
            if (m != null && m.length > 1 && m[1] != '') {
                o += m[1];
                x += m[1].length;
            } else {
                if (c[x] == ' ') o += '+';
                else {
                    var d = c.charCodeAt(x);
                    var h = d.toString(16);
                    o += '%' + (h.length < 2 ? '0' : '') + h.toUpperCase();
                }
                x++;
            }
        }
        return o;
    },
    URLDecode: function (s) {
        var o = s;
        var binVal, t;
        var r = /(%[^%]{2})/;
        while ((m = r.exec(o)) != null && m.length > 1 && m[1] != '') {
            b = parseInt(m[1].substr(1), 16);
            t = String.fromCharCode(b);
            o = o.replace(m[1], t);
        }
        return o;
    }
});