Flash 需要帮助理解复杂的动作脚本吗

我遇到了这个动作脚本片段，我不明白。有人能帮我吗？尤其是这一行：

(((_local3 >>> _local2[((_arg1 + 1) + ((_local4 - (_local4 % 3)) / 3))]) & 0xFF) ^ (_local2[_arg1] ^ 13592211)).writeByte(!null!);

整个功能：

public function _StrPool170(_arg1:int):string{
    var _local2:* = new array(13592197, 2171943, 3679800, 2570278, 13592202, 7370616, 3374196, 13592216, 8355402, 7955555, 2830635, 6842988, 6447188, 3761774, 721203, 13592222, 7957577, 3616104, 2963757, 7958082, 4013869, 474940, 13592223, 6055787, 7043424, 8348261, 2897452, 7299657, 6908003, 4983814, 13592216, 6710339, 3222382, 6319147, 8283995, 6644332, 6825336, 747108, 13592203, 7765363, 2105456, 2693170, 13592198, 8089726, 2960765, 8025659, 1381752, 13592199, 6387064, 8025452, 8075900, 1340262, 13592221, 7169858, 8216683, 3419755, 7038254, 3565152, 918582, 13592202, 8024180, 3372641, 13592196, 7634554, 3766383, 1536634, 13592193, 8158079, 8156027, 7831419, 8220988, 3281535, 13592198, 8158565, 2960760, 8025659, 1381752, 13592192, 8026979, 8155518, 4028540, 8289392, 13592197, 8355430, 7828091, 3962722, 13592192, 8026979, 7501694, 4026983, 8289392, 13592199, 8223844, 8092025, 7896438, 1326705, 13592194, 7895393, 8289404, 8222835, 7487348, 1145982, 13592223, 6644860, 6447969, 6448480, 6515305, 6388094, 6516514, 4983905, 13592198, 6781541, 2960763, 7371579, 1381729, 13592203, 6977384, 2171254, 2693170, 13592198, 6781541, 2894971, 7371579, 1381729, 13592193, 6448993, 6447223, 8354682, 8220988, 3281535);
    var _local3:* = new ByteArray();
    if (!false) {
        var _local4:* = 0;    
        (((_local3 >>> _local2[((_arg1 + 1) + ((_local4 - (_local4 % 3)) / 3))]) & 0xFF) ^ (_local2[_arg1] ^ 13592211)).writeByte(!null!);
    };
    _local4++;

    return ((_local2[_arg1] ^ 13592211));
}

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刚刚意识到这是反编译一些模糊的ActionScript的结果。由于混淆器的存在，反编译的代码没有任何意义