Script move active layer

@Max Mugen 
Give this a Try:

// Get the active document
var doc = app.activeDocument;

// Get an array of all existing layers
var allLayers = [];
for (var i = 0; i < doc.layers.length; i++) {
    allLayers.push(doc.layers[i]);
}

// Get the active layer
var activeLayer = doc.activeLayer;

// Get the index of the active layer
var activeLayerIndex = -1;
for (var i = 0; i < allLayers.length; i++) {
    if (allLayers[i] == activeLayer) {
        activeLayerIndex = i;
        break;
    }
}

// Create a dialog window to ask the user to move the active layer up or down
var moveUpDownDialog = new Window("dialog", "Move Active Layer");

// Add a button group to the dialog window
var moveUpDownButtonGroup = moveUpDownDialog.add("group");
moveUpDownButtonGroup.orientation = "row";

// Add a "Move Up" button to the button group
var moveUpButton = moveUpDownButtonGroup.add("button", undefined, "Move Up");
moveUpButton.onClick = function() {
    // Check if the active layer can be moved up
    if (activeLayerIndex > 0) {
        // Get the layer above the active layer
        var layerAbove = allLayers[activeLayerIndex - 1];
        
        // Move the active layer above the layer above it
        activeLayer.move(layerAbove, ElementPlacement.PLACEBEFORE);
        
        // Close the dialog window
        moveUpDownDialog.close();
    }
};

// Add a "Move Down" button to the button group
var moveDownButton = moveUpDownButtonGroup.add("button", undefined, "Move Down");
moveDownButton.onClick = function() {
    // Check if the active layer can be moved down
    if (activeLayerIndex < allLayers.length - 1) {
        // Get the layer below the active layer
        var layerBelow = allLayers[activeLayerIndex + 1];
        
        // Move the active layer below the layer below it
        activeLayer.move(layerBelow, ElementPlacement.PLACEAFTER);
        
        // Close the dialog window
        moveUpDownDialog.close();
    }
};

// Show the dialog window
moveUpDownDialog.show();