SCSS mixing for CSS3 gradients

_gradients.css.scss

@mixin gradient($from, $to) {
  background-color: $from; /* fallback/image non-cover color */
  background-image: -moz-linear-gradient($from, $to); /* Firefox 3.6+ */
  background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from($from), to($to)); /* Safari 4+, Chrome 1+ */
  background-image: -webkit-linear-gradient($from, $to); /* Safari 5.1+, Chrome 10+ */
  background-image: -o-linear-gradient($from, $to); /* Opera 11.10+ */
  // extras from http://www.colorzilla.com/gradient-editor/
  background: -ms-linear-gradient(top,  $from 0%,$to 100%); /* IE10+ */
  background: linear-gradient(to bottom,  $from 0%,$to 100%); /* W3C */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='$from', endColorstr='$to',GradientType=0 ); /* IE6-9 */
}

example.css.scss

.my_div {
  @include gradient($background_color, white);
}