Serialize multidimensional form into a JavaScript object

gistfile1.js

$.fn.serializeObject = function () {
    var o = {};
    var serialized = {};
    $("[name]", this).each(function () {
        var name = $(this).attr('name');
        var value = $(this).val();

        var nameBits = name.split('[');
        var previousRef = serialized;
        for (var i = 0, l = nameBits.length; i < l; i++) {
            var nameBit = nameBits[i].replace(']', '');
            if (!previousRef[nameBit]) {
                previousRef[nameBit] = {};
            }
            if (i != nameBits.length - 1) {
                previousRef = previousRef[nameBit];
            } else if (i == nameBits.length - 1) {
                previousRef[nameBit] = value;
            }
        }
    });
    return serialized;
};