Tooltips for buttons in FF-Toolbar?

[clavi]

Hello,

for convenience, I put buttons for "Temporarily allow all this page" and "Revoke temporary permissions" on my FireFox-Toolbar.
When I hover over these buttons with the mouse, I only get the descriptions of the buttons.

Wouldn't it be possible to get a list of the domains to be allowed/revoked, like you get when hovering over the corresponding NoScript-Menu-Items?

Thanks a lot
clavi