How to keep Actions panel/window selected/active?

I'm using CS6 on Windows 7 and am new to Flash. When I'm working in the actions window (F9) and I do an alt-tab to switch to another window like Notepad or Firefox etc, then I do an alt-tab to return to Flash, my cursor isn't active in the actions code window and I have to 'mouse click' to be able to type again.

Its not a massive problem but is there a way to keep the cursor alive and the actions window active?

Can I press a keyboard key rather than reaching for my mouse to be able to type again?

Many thanks.