How to Expand / Collapse the Actions Panel Scripts tree?

Hi,

    Is is possible to collapse & expand all the Actions Panel Scripts all in one go, without having to go down the list and clicking on each arrow in the tree. When opening a file with lots of scripts, this becomes very tedious to collapse the scripts, in order to concentrate on the current working set, without lots of scrolling up an down the panel to find the correct item.

A keyboard short cut or menu option to "Collapse All Scripts" & "Expand All Scripts" would be very helpful of it doesn't already exist!