Move selected Photoshop layer in layer stack

moveLayerRelativeStack.jsx

moveLayerRelativeStack("previous"); // "previous" or "next" or "front" or "back"

function moveLayerRelativeStack(relPos) {
	var c2t = function (s) {
		return app.charIDToTypeID(s);
	};
	var s2t = function (s) {
		return app.stringIDToTypeID(s);
	};
	var descriptor = new ActionDescriptor();
	var reference = new ActionReference();
	var reference2 = new ActionReference();
	reference.putEnumerated( s2t( "layer" ), s2t( "ordinal" ), s2t( "targetEnum" ));
	descriptor.putReference( c2t( "null" ), reference );
	reference2.putEnumerated( s2t( "layer" ), s2t( "ordinal" ), s2t( relPos ));
	descriptor.putReference( s2t( "to" ), reference2 );
	executeAction( s2t( "move" ), descriptor, DialogModes.NO );
}