current_view_reuse_dom.coffee

SB.Views.CurrentView = Backbone.View.extend(
  
  ...
  
  initialize: ->
    ...
    @screens = []
    ...
  
  set: (view, options) ->
    @saveScreenPosition()
    @currentView = view
    
    @current_view.render() unless @isPresent(view)
    @makeCurrent()

    # Hide the other screens
    screensToHide = _.select @screens, (screen) => screen.cid != @currentView.cid
    _.each screensToHide, (screen) =>
      @makeOld(screen)
 
 isPresent: (view) ->
  _.contains @screens, view

  makeCurrent: ->
    @screens.push @currentView
    view = $(@currentView.el)
    view.prependTo $(@el)
    view.removeClass 'hidden'

  makeOld: (screen) ->
    $(screen.render().el).addClass "hidden"

  
 ...   
)