var _css = 'http://api.citysearch.com/tracker/imp?';
var _csq = [];
if (_csv) {
    for (var e in _csv) {
        _csq.push(e + '=' + escape(_csv[e]));
    }
}
var rblPxl = new Image();
rblPxl.src = _css + _csq.join('&');