Change Processor Speed with Apple Script?

Question

Can I use AppleScript to change the Processor Speed in System Preferences/Energy Saver pane?
The background is that my PowerBook G4 is quite noisy when it's running on the highest speed. This is okey during the days but on the evenings and nights I want it silent (but still on), so instead of changing this manually I'm thinking of a Script to trigger this.
Please help. :o)

Answer 1

Hi Andreas
yes this can be done using a bit of gui script, the script supplied can be saved as a "application, run only" and activated say from iCal or cron.
"3" is Lowest, so just change the "3" in this line
click menu item 3 of menu 1 of pop up button 1 of tab group 1 of window "Energy Saver"
to 2 or 1 "2" is Highest, "1" is Automatic
and then re-save the script with another name and activate it to change your settings back to where you started.
tell application "System Events"
if not (UI elements enabled) then set UI elements enabled to true
tell application "System Preferences"
set current pane to pane "com.apple.preference.energysaver"
tell application "System Events" to tell process "System Preferences"
set frontmost to true
click radio button "Options" of tab group 1 of window "Energy Saver"
click pop up button 1 of tab group 1 of window "Energy Saver"
click menu item 2 of menu 1 of pop up button 1 of tab group 1 of window "Energy Saver"
delay 0.5
tell application "System Events"
if (name of processes) contains "System Preferences" then tell application "System Preferences" to quit
end tell
end tell
end tell
end tell
Budgie