close, open: Popup

Hello,

I have a problem with Popups.
I would like with pleasure this if I a Popup if clicks itself the old which is already openly closes.
How does this function?

Item 10: http://board.xara-users.info/viewtopic.php?f=26&t=218

Another example:
popup:"layername2(lock)", close "layername1(lock)", "layername3(lock)", "layername4(lock)"

This would open layername2 and close layername1, layername3 and layername4 if any of them were open first.

:)