/*.grayscale { 
  -webkit-filter: grayscale(100%);
  -moz-filter: grayscale(100%);
  -ms-filter: grayscale(100%);
  -o-filter: grayscale(100%);
  filter: grayscale(100%);
  filter: url(grayscale.svg);  Firefox 4+ 
  filter: gray;  IE 6-9 
}*/