CSS: Cross-browser gradient

gistfile1.css

background: #40464e;
background-image: -khtml-gradient(linear, left top, left bottom, from(#40464e), to(#2d333b));
background-image: -moz-linear-gradient(top, #40464e, #2d333b);
background-image: -ms-linear-gradient(top, #40464e, #2d333b);
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #40464e), color-stop(100%, #2d333b));
background-image: -webkit-linear-gradient(top, #40464e, #2d333b);
background-image: -o-linear-gradient(top, #40464e, #2d333b);
background-image: linear-gradient(top, #40464e, #2d333b);
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#40464e', endColorstr='#2d333b', GradientType=0);