content: tell application "System Events"
      set myFrontMost to name of first item of (processes whose frontmost is true)
  end tell
  
  property theURL : ""
  
  if myFrontMost is "Google Chrome" then
      tell application "Google Chrome"
          set theURL to URL of active tab of window 1
      end tell
      tell application "System Events"
          do shell script "Open -a Firefox " & theURL
      end tell
  else if myFrontMost is "Firefox" then
      tell application "Firefox" to activate
      tell application "System Events"
          keystroke "l" using command down
          keystroke "c" using command down
          delay 0.1
      end tell
      set theURL to the clipboard
      tell application "Google Chrome"
          activate
          set myTab to make new tab at end of tabs of window 1
          set URL of myTab to theURL
      end tell
  end if
  