   default_view : InteractiveContextView
   defaults :
     children : []
-    width : $(window).width();
-    height : $(window).height();
+    width : $(window).width()
+    height : $(window).height()
     render_loop : true
 class InteractiveContexts extends Backbone.Collection
   model : InteractiveContext

    total_rows : 0
  default_view : DataTableView
  load : (offset) ->
    console.log('DTV load: url='+@get('url'))
    $.get("/data" + @get('url'),
      data_slice : JSON.stringify(@get('data_slice')) ,
      (data) =>

  type : 'DataTable'
  initialize : (attrs, options)->
    super(attrs, options)
    @register_property('offset', ['data_slice'],
      (() -> return @get('data_slice')[0]), false
    )
