help: UI scripting iCal

i’m trying to give the calendar scrollbar area focus (without selecting any specific calendar). i’ve tried addressing it by specific name, and UI element. the following script doesnt error out. it just doesnt respond. what am i doing wrong?

tell application "iCal"
end tell

tell application "System Events"
	tell process "iCal"
		click table of UI element 1 of UI element 6 of window 2
	end tell
end tell