The size of toolbar icon can be changed?

[Zarick Lau <zenithlau i-cable com>]

Hi,

I have a question on possibly the icon theme related question.

Is it possible to change the icon size of 
1. the Gnome menu (from the gnome-panel)
2. the application toolbar like galone and evolution?

I do think that the icon is a bit of too large. As I am always a laptop
users, my little box has one a 12.1" display !

Any suggestion is welcome :)

Thanks.
Zarick