extend Location to read or write a search string

Location.parse.js

location.parse = function () { //_qp_//
    var i, e, arr, str = location.search,
        out = new(function Queries() {});

    if (!str || str.charAt(0) !== '?') {
        return {};
    }
    arr = decodeURI(str.substr(1)).split('&'); // no '?'
    for (i = 0; i < arr.length; i++) {
        e = arr[i].split('=');
        out[e[0]] = e[1] ? decodeURIComponent(e[1]) : null;
    }
    this.params = out; // stor'em
    return out;
};

Location.query.js

location.query = function (obj, go) { //_pq_//
    var i, e, arr = [], str = '';

    if (typeof obj !== 'object') {
        return false;
    }
    for (i in obj) {
        e = obj[i];
        if (e === null || e === undefined || e === '') {
            arr.push(i);
        } else {
            arr.push(i + '=' + encodeURIComponent(e));
        }
    }
    str = encodeURI(arr.join('&'));
    if (go || go === undefined) location.search = str;
    return str;
};