anchor.diff:    ###**
     Forces a repaint of the given element.
   
  -  @function up.util.forceRepaint
  -  @internal
  -  ###
  -  forceRepaint = (element) ->
  +  @function up.util.paint
  +  @internal
  +  ###
  +  paint = (element) ->
       element = up.element.get(element)
       element.offsetHeight
   
  
positive.code:     select array1, (element) ->
        contains(array2, element)
  
    addClass = (element, klassOrKlasses) ->
      changeClassList(element, klassOrKlasses, 'add')
  
    removeClass = (element, klassOrKlasses) ->
      changeClassList(element, klassOrKlasses, 'remove')
  
    changeClassList = (element, klassOrKlasses, fnName) ->
      classList = up.element.get(element).classList
      if isArray(klassOrKlasses)
        each klassOrKlasses, (klass) ->
          classList[fnName](klass)
      else
        classList[fnName](klassOrKlasses)
  
    hasClass = (element, klass) ->
      classList = up.element.get(element).classList
      classList.contains(klass)
  
    ###**
    Waits for the given number of milliseconds, the runs the given callback.
  
  
negative.code:   isUnmodifiedMouseEvent: isUnmodifiedMouseEvent
    setTimer: setTimer
    nextFrame: nextFrame
    writeTemporaryStyle: writeTemporaryStyle
    paint: paint
    concludeCssTransition: concludeCssTransition
    escapePressed: escapePressed
    contains: contains
  