['filter', 
  ['property', 
    ['ident', 'filter'], 
    ['comment', 'test']], 
  ['filterv', 
    ['progid', 
      ['comment', 'test'], 
      ['raw', 'progid:DXImageTransform.Microsoft.AlphaImageLoader(/*)*/src='images/transparent-border.png'/*)*/,/*)*/sizingMethod='scale')']]]]