(* This AppleScript will resize the current application window to the height specified below and center it in the screen. Compiled with code from Natanial Wools and Amit Agarwal *)
set the_application to (path to frontmost application as Unicode text)
set appHeight to 1440
set appWidth to 900
tell application "Finder"
set screenResolution to bounds of window of desktop
end tell
set screenWidth to item 3 of screenResolution
set screenHeight to item 4 of screenResolution
tell application the_application
activate
reopen
set yAxis to (screenHeight - appHeight) / 2 as integer
set xAxis to (screenWidth - appWidth) / 2 as integer
set the bounds of the first window to {xAxis, yAxis, appWidth + xAxis, appHeight + yAxis}
end tell