on MouseUp
  
  global gMovieName, gMovie, gSoloMode
  global gNextIcon, gPreIcon, gBackIcon, gControlIcon, gIndexIcon, gFirstIcon
  global gLastFrame, gPlaceOfOrigin
  global gSideBarOfOrigin, gMap1Icon, gMap2Icon, gMultiPageSidebar
  
  
  if the ClickOn = gControlIcon then 
    openControlPanel
  else if the ClickOn = gPreIcon then
    if gMultiPageSidebar = FALSE then
      -- single page sidebar
      if the frame = label("M1") then
        go to frame gSideBarOfOrigin
      else if the frame = label("M2") then
        go to frame gSideBarOfOrigin
      else
        go to frame gPlaceOfOrigin
      end if
    else
      -- multiple page sidebar
      if the frame = label("S5") then -- KLUDGE
        set gMultiPageSidebar = FALSE
        go to frame gPlaceOfOrigin
      else
        go to the frame - 1
      end if 
    end if
  else if the ClickOn = gNextIcon then
    if gMultiPageSidebar = TRUE then
      if the frame = label("End") then
        set gMultiPageSidebar = FALSE
        go to frame gPlaceOfOrigin
      else
        go to the frame + 1
      end if
    end if
  else if the ClickOn = gMap1Icon and the frame = label("S2") then
    set gSideBarOfOrigin = the frame
    go to frame label("M1")
  else if the ClickOn = gMap2Icon and the frame = label("S2") then
    set gSideBarOfOrigin = the frame
    go to frame label("M2")
  end if
  
end MouseUp