position-reminders.applescript

activate application "Reminders"

tell application "Finder"
  set _b to bounds of window of desktop
  set _width to item 3 of _b
  set _height to item 4 of _b
end tell

tell application "System Events"
  
  try
    
    -- Attempt to show the sidebar. If it throws  
    -- an error, we know the sidebar is already 
    -- open, so we close it.
    -- If it works, we immediately close it.
    tell process "Reminders"
      click menu item "Show Sidebar" of menu "View" of menu bar 1
    end tell
    
    keystroke "s" using {option down, command down}
    
  on error errMsg
    
    -- Close the sidebar because it's open.
    keystroke "s" using {option down, command down}
    
  end try
  
  -- Put it in the upper right hand corner.
  set position of first window of application process "Reminders" to {_width - 300, 40}
  set size of first window of application process "Reminders" to {560, 400}
  
end tell