     eventSource.loadJSON(timeline_data, url)
     tl.layout()
     callback() if callback?
+  return
 
 
 panTimeline = (tl, delta) ->

  xmax = b.getMaxVisibleDate().getTime()
  dx = (xmax - xmin) * delta / 100
  b.setCenterVisibleDate b.getCenterVisibleDate().getTime() + dx


zoomTimeline = (tl, zoomIn) ->

    else
      checkbox.attr "checked", "checked"
    callback() if callback?
    return


setupKeybinds = (keyboardInput, tl) ->
