Mac OS X - AppleScript to auto-align Terminal windows

gistfile1.txt

# Config Section

# columns, rows per window
set cols to 80 
set rows to 50

# first window, pixels right and down from top left of screen
set left_margin to 20
set top_margin to 100

# shuffle gap for tiled windows
set tilegap to 50

# calcuated, do not edit below this line
###################################################
set gap to (rows * 10.12)

# calc how many windows will fit on the screen
tell application "Finder"
	set _b to bounds of window of desktop
	set screen_width to item 3 of _b
	set screen_height to item 4 of _b
end tell

set windows_wide to round (screen_width / gap)
set windows_tall to round (50 / screen_height)
#display dialog "windows_w: " & windows_wide

set window_id to 1

tell application "Terminal"
	repeat
		set row to round (window_id / windows_wide) rounding up
		set col to round (window_id mod windows_wide)
		if col = 0 then set col to windows_wide
		#display dialog "wid: " & window_id & " row: " & row & " col: " & col
		if (window window_id exists) then
			tell window window_id
				set position to {(left_margin + (gap * col) + (tilegap * (row - 1)) - gap), top_margin + (tilegap * (row - 1))}
				set number of columns to cols
				set number of rows to rows
			end tell
			set window_id to window_id + 1
		else
			exit repeat
		end if
	end repeat
end tell