Create gradients with ease using Sass

Sass-gradient.sass

=gradient($startcolor, $endcolor, $startpos: top)
  background-color: $startcolor / 2 + $endcolor / 2
  @if $startpos == "top"
    filter: unquote("progid:DXImageTransform.Microsoft.gradient(startColorstr='")#{$startcolor}unquote("', endColorstr='")#{$endcolor}unquote("')")
    -ms-filter: unquote("progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$startcolor}', endColorstr='#{$endcolor}')")
    background-image: -webkit-gradient(linear, top left, bottom left, from($startcolor), to($endcolor))
  @if $startpos == "left"
    filter: unquote("progid:DXImageTransform.Microsoft.gradient(GradientType=1, startColorstr='")#{$startcolor}unquote("', endColorstr='")#{$endcolor}unquote("')")
    -ms-filter: unquote("progid:DXImageTransform.Microsoft.gradient(GradientType=1, startColorstr='#{$startcolor}', endColorstr='#{$endcolor}')")
    background-image: -webkit-gradient(linear, top left, top right, from($startcolor), to($endcolor))
  @if $startpos == "bottom"
    background-image: -webkit-gradient(linear, bottom left, top left, from($startcolor), to($endcolor))
  @if $startpos == "right"
    background-image: -webkit-gradient(linear, top right, top left, from($startcolor), to($endcolor))
  @if $startpos == "top left"
    background-image: -webkit-gradient(linear, $startpos, bottom right, from($startcolor), to($endcolor))
  @if $startpos == "top right"
    background-image: -webkit-gradient(linear, $startpos, bottom left, from($startcolor), to($endcolor))
  @if $startpos == "bottom left"
    background-image: -webkit-gradient(linear, $startpos, top right, from($startcolor), to($endcolor))
  @if $startpos == "bottom right"
    background-image: -webkit-gradient(linear, $startpos, top left, from($startcolor), to($endcolor))
  background-image: -webkit-linear-gradient($startpos, $startcolor, $endcolor)
  background-image: -moz-linear-gradient($startpos, $startcolor, $endcolor)
  background-image: -ms-linear-gradient($startpos, $startcolor, $endcolor)
  background-image: -o-linear-gradient($startpos, $startcolor, $endcolor)
  background-image: linear-gradient($startpos, $startcolor, $endcolor)