Cross-browser Filter Blur CSS
filter: blur(5px); /* Someday, sigh ... */
-webkit-filter: blur(5px); /* Prefixed CSS3 blur filters */
-moz-filter: blur(5px);
-o-filter: blur(5px);
-ms-filter: blur(5px);
/* filter: url(#blur); Firefox needs SVG */
filter:progid:DXImageTransform.Microsoft.Blur(PixelRadius='10'); /* IE lte 9 */