     styleNumber: computedStyleNumber # practical.
     inlineStyle: inlineStyle # internal
     setStyle: setInlineStyle # practical.
-    resolveSelector: resolveSelector # internal
-    none: -> NONE # internal
     isVisible: isVisible # practical
     upAttrs: upAttrs
     toggleAttr: toggleAttr

up.element = do ->

  u = up.util

  ###**
  Returns a null-object that mostly behaves like an `Element`.

  @function up.element.none()
  @internal
  ###
  NONE = { getAttribute: -> undefined }

  MATCH_FN_NAME = if up.browser.isIE11() then 'msMatchesSelector' else 'matches'


      obj.toString() + "px"
    else
      obj

  ###**
  Returns whether the given element is currently visible.
