       $(this).css
         left: width
 
-      adjustImagePosition $('img', this).not('.keep-original')
+      adjustImagePosition $('img', this).not(".#{that.options.classes.preserve}")
 
   findMultiplier = =>
     if @size() == 1 then 1 else 3

      listStyle: 'none'
      position: 'relative'

    $container.find('img').not('keep-original').css
      "-webkit-backface-visibility": 'hidden'
      "-ms-interpolation-mode": 'bicubic'
      "min-width": '100%'

    hashchange: false
    scrollable: true
    classes:
      preserve: 'preserve'
      nav: 'slides-navigation'
      container: 'slides-container'
      pagination: 'slides-pagination'
