Скрипт для порезки слоёв по гриду в Photoshop?

Ну не ахти какой код, но вроде работает. Накидал на скорую руку.
Первые две строки определяют размер ячейки.

var cellWidth = 60;
var cellHeight = 60;

if (app.documents.length <= 0) {
    alert("No open documents");
}
else {
    try {
        var docRef = app.activeDocument;
        var layerCount = docRef.layers.length;
        var layerSetsCount = docRef.layerSets.length;
        var docWidth = docRef.width;
        var docHeight = docRef.height;

        var stepW = Math.ceil(docWidth / cellWidth);
        var stepH = Math.ceil(docHeight / cellHeight);

        var layerName = "";
        var layerCount = docRef.artLayers.length;
        var insertLayer;
        var newLayerCount = 0;

        for (j = 0; j < layerCount; j++) {
            for (h = 0; h < stepH; h++) {
                for (w = 0; w < stepW; w++) {
                    docRef.activeLayer = docRef.artLayers[j + newLayerCount];
                    layerName = docRef.activeLayer.name;
                    insertLayer = docRef.activeLayer.duplicate(docRef, ElementPlacement.PLACEATBEGINNING);
                    docRef.activeLayer = insertLayer;
                    docRef.selection.select([
                        [w * cellWidth, h * cellHeight],
                        [(w + 1) * cellWidth, h * cellHeight],
                        [(w + 1) * cellWidth, (h + 1) * cellHeight],
                        [w * cellWidth, (h + 1) * cellHeight]
                    ]);
                    docRef.selection.invert();
                    docRef.selection.clear();
                    insertLayer.name = layerName + "_" + h.toString() + "_" + w.toString();
                    newLayerCount++;
                }
            }
        }
    } catch (e) {
        alert(e);
    }
}