get_query_params

function get_query_params() {
    var keyvalues = window.location.search.split('&');
    if (keyvalues.length) {
        keyvalues[0] = keyvalues[0].substr(1);
    }
    ret = {};
    for (key in keyvalues) {
        if (!keyvalues[key].length)
            continue;
        parts = keyvalues[key].split('=');
        ret[parts[0]] = parts[1];
    }
    return ret;
}