         # creation = new Date(o.created_at).getTime()
         # opacity = .05 + .95 * (creation - sub_creation) / (Date.now() - sub_creation)
 
+        className = 'histo_avatar'
         if backgrounded || @props.backgrounded
           avatar_style = if fetch('/current_user').user == user 
                            _.extend({}, regular_avatar_style, {opacity: .25}) 

      reset_selection_state(hist)
      dirtied = true 

    avatar_radius = calculateAvatarRadius(@props.width, @props.height, @props.opinions)

    if @local.avatar_size != avatar_radius * 2
      @local.avatar_size = avatar_radius * 2
      save @local
      dirtied = true 

    # extraction from @try_histocache
    proposal = fetch(@props.proposal)
    histocache_key = @histocache_key()
    if ENABLE_SERVER_HISTOCACHE && proposal.histocache?[histocache_key]
      if histocache_key != @local.histocache?.hash
        @local.histocache =

          if p1.y < p2.y           
            p1.y -= offset_y / 2
            p2.y += offset_y / 2

          else 
            p2.y -= offset_y / 2
            p1.y += offset_y / 2


      # Visit subregions if we could possibly have a collision there
