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background-color:#ccc; /* Not support */
background:-webkit-gradient(linear, left top, left bottom, from(#ccc), to(#000)); /* Webkit, IE 9 */
background:-moz-linear-gradient(top, #ccc, #000); /* Firefox */
background:-o-linear-gradient(top, #ccc, #000); /* Opera */
 filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#cccccc, endColorstr=#000000); /* IE 5.5 - 7 */
-ms-filter:"progid:DXImageTransform.Microsoft.gradient(startColorstr=#cccccc, endColorstr=#000000)"; /* IE 8 */

background-color:#ccc; /* Not support */
background: -webkit-gradient(linear, left top, right top, from(#ccc), to(#000)); /* Webkit, IE 9 */
background: -moz-linear-gradient(left, #ccc, #000); /* Firefox */
background:-o-linear-gradient(top, #ccc, #000); /* Opera */
 filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#cccccc, endColorstr=#000000, GradientType=1); /* IE 5.5 - 7 */
-ms-filter:"progid:DXImageTransform.Microsoft.gradient(startColorstr=#cccccc, endColorstr=#000000, GradientType=1)"; /* IE 8 */