I have just learnt how to use JSFL and made a simple flash component. It can do three things, hide all layers other than the selected one, lock all layers other than the selected and do both at the same time. It is a bit buggy, so when you click one of the buttons you have to select a new layer for it to work. To use it open flash and click Windows>Other Panels>HideLockAll.

Click here to download.

I am 90% sure this only works with Flash 8, and you need Macromedia Extension Manager to install it into flash.