// Requires Sass 3.1+ @mixin radial-gradient($g1, $g2,

                     $g3: null, $g4: null,
                     $g5: null, $g6: null,
                     $g7: null, $g8: null,
                     $g9: null, $g10: null,
                     $pos: null,
                     $shape-size: null,
                     $fallback: null) {

$data: _radial-arg-parser($g1, $g2, $pos, $shape-size);
$g1:  nth($data, 1);
$g2:  nth($data, 2);
$pos: nth($data, 3);
$shape-size: nth($data, 4);

$full: $g1, $g2, $g3, $g4, $g5, $g6, $g7, $g8, $g9, $g10;

// Strip deprecated cover/contain for spec
$shape-size-spec: _shape-size-stripper($shape-size);

// Set $g1 as the default fallback color
$first-color: nth($full, 1);
$fallback-color: nth($first-color, 1);

@if (type-of($fallback) == color) or ($fallback == "transparent") {
  $fallback-color: $fallback;
}

// Add Commas and spaces
$shape-size: if($shape-size, "#{$shape-size}, ", null);
$pos:        if($pos, "#{$pos}, ", null);
$pos-spec:   if($pos, "at #{$pos}", null);
$shape-size-spec: if(($shape-size-spec != " ") and ($pos == null), "#{$shape-size-spec}, ", "#{$shape-size-spec} ");

background-color:  $fallback-color;
background-image: -webkit-radial-gradient(#{$pos}#{$shape-size}#{$full});
background-image: radial-gradient(#{$shape-size-spec}#{$pos-spec}#{$full});

}