再帰的にレイヤーをアンロックする

recursiveLayerUnlock(activeDocument)

function recursiveLayerUnlock(l){
	for (var i = 0; i < l.layers.length; i++){
		l.layers[i].locked = false;
		if (hasSubLayer(l)) {
			recursiveLayerUnlock(l.layers[i])
		}
	}
}

function hasSubLayer(l){
	return l.layers.length > 0
}