html.set-grey{
	filter: grayscale(100%); -webkit-filter: grayscale(100%);
	-moz-filter: grayscale(100%); -ms-filter: grayscale(100%);
	-o-filter: grayscale(100%); filter: url("data:image/svg+xml;utf8,#grayscale");
	filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
	-webkit-filter: grayscale(1);
}