tell application "Adobe Photoshop CS4" 
  set docName1 to name of document 1 
  set docName2 to name of document 2 
  if docName1 ends with ".jpg" then 
    set sourceDoc to docName1 
    set targetDoc to docName2 
  else 
    set sourceDoc to docName2 
    set targetDoc to docName1 
  end if 
end tell 
{sourceDoc, targetDoc} 

tell application "Adobe Photoshop CS4" 
  tell document sourceDoc 
    -- tu was 
  end tell 
end tell 

tell application "Adobe Photoshop CS4" 
  activate 
  set docName1 to name of document 1 
  set docName2 to name of document 2 
  if docName1 ends with ".jpg" then 
    set sourceDoc to docName1 
    set targetDoc to docName2 
  else 
    set sourceDoc to docName2 
    set targetDoc to docName1 
  end if 
  -- eine Schleife durch die Pfade des Quelldokuments 
  repeat with p from 1 to count of path items of document sourceDoc 
    -- das Quelldokument in den Vordergrund rücken 
    set current document to document sourceDoc 
    -- den aktuellen Pfad auswählen 
    select path item p of document sourceDoc 
    -- kopieren 
    copy 
    -- das Zieldokument in den Vordergrund rücken 
    set current document to document targetDoc 
    -- den Handler aufrufen, welcher den Pfad einsetzt 
    my pastePath() 
  end repeat 
end tell 
 
on pastePath() 
  tell application "System Events" 
    keystroke "v" using {command down} 
  end tell 
end pastePath 

deselect path item 

my pastePath() 

tell application "Adobe Photoshop CS5" 
  activate 
  set docName1 to name of document 1 
  set docName2 to name of document 2 
  if docName1 ends with ".jpg" then 
    set sourceDoc to docName1 
    set targetDoc to docName2 
  else 
    set sourceDoc to docName2 
    set targetDoc to docName1 
  end if 
  -- eine Schleife durch die Pfade des Quelldokuments 
  repeat with p from 1 to count of path items of document sourceDoc 
    -- das Quelldokument in den Vordergrund rücken 
    set current document to document sourceDoc 
    -- den aktuellen Pfad auswählen 
    select path item p of document sourceDoc 
    -- kopieren 
    copy 
    -- das Zieldokument in den Vordergrund rücken 
    set current document to document targetDoc 
    -- den Handler aufrufen, welcher den Pfad einsetzt 
    my pastePath() 
    -- die Auswahl im Zieldokument aufheben 
    try 
      deselect every path item of document targetDoc 
    end try 
  end repeat 
end tell 
 
on pastePath() 
  tell application "System Events" 
    keystroke "v" using {command down} 
  end tell 
end pastePath